From e57592c1ba338e132c5c5f3e8bb3d6431617b337 Mon Sep 17 00:00:00 2001
From: Fedor <fedor@mail.ru>
Date: Sun, 7 Feb 2021 17:33:18 +0200
Subject: [PATCH] Clean up presentation api leftovers.

---
 dom/base/nsContentUtils.cpp | 56 -------------------------------------
 dom/base/nsContentUtils.h   |  6 ----
 dom/base/nsFrameLoader.cpp  | 16 +----------
 dom/base/nsGkAtomList.h     |  1 -
 dom/ipc/PTabContext.ipdlh   |  5 ----
 dom/ipc/TabChild.cpp        |  5 ----
 dom/ipc/TabContext.cpp      | 16 ++---------
 dom/ipc/TabContext.h        | 20 ++-----------
 modules/libpref/init/all.js | 15 ----------
 9 files changed, 6 insertions(+), 134 deletions(-)

diff --git a/dom/base/nsContentUtils.cpp b/dom/base/nsContentUtils.cpp
index a34752554..107daaede 100644
--- a/dom/base/nsContentUtils.cpp
+++ b/dom/base/nsContentUtils.cpp
@@ -9341,62 +9341,6 @@ nsContentUtils::SetScrollbarsVisibility(nsIDocShell* aDocShell, bool aVisible)
   }
 }
 
-/* static */ void
-nsContentUtils::GetPresentationURL(nsIDocShell* aDocShell, nsAString& aPresentationUrl)
-{
-  MOZ_ASSERT(aDocShell);
-
-  // Simulate receiver context for web platform test
-  if (Preferences::GetBool("dom.presentation.testing.simulate-receiver")) {
-    nsCOMPtr<nsIDocument> doc;
-
-    nsCOMPtr<nsPIDOMWindowOuter> docShellWin =
-      do_QueryInterface(aDocShell->GetScriptGlobalObject());
-    if (docShellWin) {
-      doc = docShellWin->GetExtantDoc();
-    }
-
-    if (NS_WARN_IF(!doc)) {
-      return;
-    }
-
-    nsCOMPtr<nsIURI> uri = doc->GetDocumentURI();
-    if (NS_WARN_IF(!uri)) {
-      return;
-    }
-
-    nsAutoCString uriStr;
-    uri->GetSpec(uriStr);
-    aPresentationUrl = NS_ConvertUTF8toUTF16(uriStr);
-    return;
-  }
-
-  if (XRE_IsContentProcess()) {
-    nsCOMPtr<nsIDocShellTreeItem> sameTypeRoot;
-    aDocShell->GetSameTypeRootTreeItem(getter_AddRefs(sameTypeRoot));
-    nsCOMPtr<nsIDocShellTreeItem> root;
-    aDocShell->GetRootTreeItem(getter_AddRefs(root));
-    if (sameTypeRoot.get() == root.get()) {
-      // presentation URL is stored in TabChild for the top most
-      // <iframe mozbrowser> in content process.
-      TabChild* tabChild = TabChild::GetFrom(aDocShell);
-      if (tabChild) {
-        aPresentationUrl = tabChild->PresentationURL();
-      }
-      return;
-    }
-  }
-
-  nsCOMPtr<nsILoadContext> loadContext(do_QueryInterface(aDocShell));
-  nsCOMPtr<nsIDOMElement> topFrameElement;
-  loadContext->GetTopFrameElement(getter_AddRefs(topFrameElement));
-  if (!topFrameElement) {
-    return;
-  }
-
-  topFrameElement->GetAttribute(NS_LITERAL_STRING("mozpresentation"), aPresentationUrl);
-}
-
 /* static */ nsIDocShell*
 nsContentUtils::GetDocShellForEventTarget(EventTarget* aTarget)
 {
diff --git a/dom/base/nsContentUtils.h b/dom/base/nsContentUtils.h
index e0c023fff..83ee41740 100644
--- a/dom/base/nsContentUtils.h
+++ b/dom/base/nsContentUtils.h
@@ -2679,12 +2679,6 @@ public:
 
   static void SetScrollbarsVisibility(nsIDocShell* aDocShell, bool aVisible);
 
-  /*
-   * Return the associated presentation URL of the presented content.
-   * Will return empty string if the docshell is not in a presented content.
-   */
-  static void GetPresentationURL(nsIDocShell* aDocShell, nsAString& aPresentationUrl);
-
   /*
    * Try to find the docshell corresponding to the given event target.
    */
diff --git a/dom/base/nsFrameLoader.cpp b/dom/base/nsFrameLoader.cpp
index 79c889596..b4397d063 100644
--- a/dom/base/nsFrameLoader.cpp
+++ b/dom/base/nsFrameLoader.cpp
@@ -3102,14 +3102,6 @@ nsFrameLoader::ApplySandboxFlags(uint32_t sandboxFlags)
     // The child can only add restrictions, never remove them.
     sandboxFlags |= parentSandboxFlags;
 
-    // If this frame is a receiving browsing context, we should add
-    // sandboxed auxiliary navigation flag to sandboxFlags. See
-    // https://w3c.github.io/presentation-api/#creating-a-receiving-browsing-context
-    nsAutoString presentationURL;
-    nsContentUtils::GetPresentationURL(mDocShell, presentationURL);
-    if (!presentationURL.IsEmpty()) {
-      sandboxFlags |= SANDBOXED_AUXILIARY_NAVIGATION;
-    }
     mDocShell->SetSandboxFlags(sandboxFlags);
   }
 }
@@ -3427,11 +3419,6 @@ nsFrameLoader::GetNewTabContext(MutableTabContext* aTabContext,
   rv = PopulateUserContextIdFromAttribute(attrs);
   NS_ENSURE_SUCCESS(rv, rv);
 
-  nsAutoString presentationURLStr;
-  mOwnerContent->GetAttr(kNameSpaceID_None,
-                         nsGkAtoms::mozpresentation,
-                         presentationURLStr);
-
   nsCOMPtr<nsIDocShell> docShell = mOwnerContent->OwnerDoc()->GetDocShell();
   nsCOMPtr<nsILoadContext> parentContext = do_QueryInterface(docShell);
   NS_ENSURE_STATE(parentContext);
@@ -3459,8 +3446,7 @@ nsFrameLoader::GetNewTabContext(MutableTabContext* aTabContext,
                                containingApp,
                                showAccelerators,
                                showFocusRings,
-                               attrs,
-                               presentationURLStr);
+                               attrs);
   NS_ENSURE_STATE(tabContextUpdated);
 
   return NS_OK;
diff --git a/dom/base/nsGkAtomList.h b/dom/base/nsGkAtomList.h
index a1a0b15f9..5e08fdc20 100644
--- a/dom/base/nsGkAtomList.h
+++ b/dom/base/nsGkAtomList.h
@@ -1038,7 +1038,6 @@ GK_ATOM(predicate, "predicate")
 GK_ATOM(prefix, "prefix")
 GK_ATOM(preload, "preload")
 GK_ATOM(prerendered, "prerendered")
-GK_ATOM(mozpresentation, "mozpresentation")
 GK_ATOM(preserve, "preserve")
 GK_ATOM(preserveSpace, "preserve-space")
 GK_ATOM(preventdefault, "preventdefault")
diff --git a/dom/ipc/PTabContext.ipdlh b/dom/ipc/PTabContext.ipdlh
index 72cd90e2a..62d6ec0f3 100644
--- a/dom/ipc/PTabContext.ipdlh
+++ b/dom/ipc/PTabContext.ipdlh
@@ -48,11 +48,6 @@ struct FrameIPCTabContext
   // Whether this TabContext should work in prerender mode.
   bool isPrerendered;
 
-  // The requested presentation URL.
-  // This value would be empty if the TabContext isn't created for
-  // presented content.
-  nsString presentationURL;
-
   // Keyboard indicator state inherited from the parent.
   UIStateChangeType showAccelerators;
   UIStateChangeType showFocusRings;
diff --git a/dom/ipc/TabChild.cpp b/dom/ipc/TabChild.cpp
index 182aa628b..caae91fa5 100644
--- a/dom/ipc/TabChild.cpp
+++ b/dom/ipc/TabChild.cpp
@@ -770,11 +770,6 @@ TabChild::NotifyTabContextUpdated(bool aIsPreallocated)
   if (aIsPreallocated)  {
     nsDocShell::Cast(docShell)->SetOriginAttributes(OriginAttributesRef());
   }
-
-  // Set SANDBOXED_AUXILIARY_NAVIGATION flag if this is a receiver page.
-  if (!PresentationURL().IsEmpty()) {
-    docShell->SetSandboxFlags(SANDBOXED_AUXILIARY_NAVIGATION);
-  }
 }
 
 void
diff --git a/dom/ipc/TabContext.cpp b/dom/ipc/TabContext.cpp
index 66a279052..b313da0ff 100644
--- a/dom/ipc/TabContext.cpp
+++ b/dom/ipc/TabContext.cpp
@@ -190,12 +190,6 @@ TabContext::OriginAttributesRef() const
   return mOriginAttributes;
 }
 
-const nsAString&
-TabContext::PresentationURL() const
-{
-  return mPresentationURL;
-}
-
 UIStateChangeType
 TabContext::ShowAccelerators() const
 {
@@ -215,8 +209,7 @@ TabContext::SetTabContext(bool aIsMozBrowserElement,
                           mozIApplication* aAppFrameOwnerApp,
                           UIStateChangeType aShowAccelerators,
                           UIStateChangeType aShowFocusRings,
-                          const DocShellOriginAttributes& aOriginAttributes,
-                          const nsAString& aPresentationURL)
+                          const DocShellOriginAttributes& aOriginAttributes)
 {
   NS_ENSURE_FALSE(mInitialized, false);
 
@@ -248,7 +241,6 @@ TabContext::SetTabContext(bool aIsMozBrowserElement,
   mContainingAppId = containingAppId;
   mOwnApp = aOwnApp;
   mContainingApp = aAppFrameOwnerApp;
-  mPresentationURL = aPresentationURL;
   mShowAccelerators = aShowAccelerators;
   mShowFocusRings = aShowFocusRings;
   return true;
@@ -261,7 +253,6 @@ TabContext::AsIPCTabContext() const
                                           mContainingAppId,
                                           mIsMozBrowserElement,
                                           mIsPrerendered,
-                                          mPresentationURL,
                                           mShowAccelerators,
                                           mShowFocusRings));
 }
@@ -285,7 +276,6 @@ MaybeInvalidTabContext::MaybeInvalidTabContext(const IPCTabContext& aParams)
   bool isPrerendered = false;
   uint32_t containingAppId = NO_APP_ID;
   DocShellOriginAttributes originAttributes;
-  nsAutoString presentationURL;
   UIStateChangeType showAccelerators = UIStateChangeType_NoChange;
   UIStateChangeType showFocusRings = UIStateChangeType_NoChange;
 
@@ -348,7 +338,6 @@ MaybeInvalidTabContext::MaybeInvalidTabContext(const IPCTabContext& aParams)
       isMozBrowserElement = ipcContext.isMozBrowserElement();
       isPrerendered = ipcContext.isPrerendered();
       containingAppId = ipcContext.frameOwnerAppId();
-      presentationURL = ipcContext.presentationURL();
       showAccelerators = ipcContext.showAccelerators();
       showFocusRings = ipcContext.showFocusRings();
       originAttributes = ipcContext.originAttributes();
@@ -395,8 +384,7 @@ MaybeInvalidTabContext::MaybeInvalidTabContext(const IPCTabContext& aParams)
                                  containingApp,
                                  showAccelerators,
                                  showFocusRings,
-                                 originAttributes,
-                                 presentationURL);
+                                 originAttributes);
   if (!rv) {
     mInvalidReason = "Couldn't initialize TabContext.";
   }
diff --git a/dom/ipc/TabContext.h b/dom/ipc/TabContext.h
index 1507a0dc8..e0b6f0d96 100644
--- a/dom/ipc/TabContext.h
+++ b/dom/ipc/TabContext.h
@@ -125,12 +125,6 @@ public:
    */
   const DocShellOriginAttributes& OriginAttributesRef() const;
 
-  /**
-   * Returns the presentation URL associated with the tab if this tab is
-   * created for presented content
-   */
-  const nsAString& PresentationURL() const;
-
   UIStateChangeType ShowAccelerators() const;
   UIStateChangeType ShowFocusRings() const;
 
@@ -169,8 +163,7 @@ protected:
                      mozIApplication* aAppFrameOwnerApp,
                      UIStateChangeType aShowAccelerators,
                      UIStateChangeType aShowFocusRings,
-                     const DocShellOriginAttributes& aOriginAttributes,
-                     const nsAString& aPresentationURL);
+                     const DocShellOriginAttributes& aOriginAttributes);
 
   /**
    * Modify this TabContext to match the given TabContext.  This is a special
@@ -225,11 +218,6 @@ private:
    */
   DocShellOriginAttributes mOriginAttributes;
 
-  /**
-   * The requested presentation URL.
-   */
-  nsString mPresentationURL;
-
   /**
    * Keyboard indicator state (focus rings, accelerators).
    */
@@ -257,8 +245,7 @@ public:
                 mozIApplication* aAppFrameOwnerApp,
                 UIStateChangeType aShowAccelerators,
                 UIStateChangeType aShowFocusRings,
-                const DocShellOriginAttributes& aOriginAttributes,
-                const nsAString& aPresentationURL = EmptyString())
+                const DocShellOriginAttributes& aOriginAttributes)
   {
     return TabContext::SetTabContext(aIsMozBrowserElement,
                                      aIsPrerendered,
@@ -266,8 +253,7 @@ public:
                                      aAppFrameOwnerApp,
                                      aShowAccelerators,
                                      aShowFocusRings,
-                                     aOriginAttributes,
-                                     aPresentationURL);
+                                     aOriginAttributes);
   }
 };
 
diff --git a/modules/libpref/init/all.js b/modules/libpref/init/all.js
index e3873c6d6..ec57a0bb7 100644
--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -5169,21 +5169,6 @@ pref("dom.udpsocket.enabled", false);
 // Disable before keyboard events and after keyboard events by default.
 pref("dom.beforeAfterKeyboardEvent.enabled", false);
 
-// Presentation API
-pref("dom.presentation.enabled", false);
-pref("dom.presentation.controller.enabled", false);
-pref("dom.presentation.receiver.enabled", false);
-
-// Presentation Device
-pref("dom.presentation.tcp_server.debug", false);
-pref("dom.presentation.discovery.enabled", false);
-pref("dom.presentation.discovery.legacy.enabled", false);
-pref("dom.presentation.discovery.timeout_ms", 10000);
-pref("dom.presentation.discoverable", false);
-pref("dom.presentation.discoverable.encrypted", true);
-pref("dom.presentation.discoverable.retry_ms", 5000);
-pref("dom.presentation.session_transport.data_channel.enable", false);
-
 #ifdef XP_MACOSX
 #if defined(DEBUG)
 // In debug builds we crash by default on insecure text input (when a