Bug 1519546, part 8 - Also gather EffectsInfo for remote browsers with WebRender. r=jrmuizel

The nsDisplayListBuilder bits were added in the previous commit.

Differential Revision: https://phabricator.services.mozilla.com/D32477

--HG--
extra : rebase_source : aec41ccaaab4c99b11ed94baf908d1ec61eaee31
extra : intermediate-source : bbcfdcc12774c1b8d78c6420614141382fed3d40
extra : source : 489c8d663f7f63ea32d3eb2226d45a84e51aabe8

gfx/layers/wr/WebRenderUserData.cpp

@@ -372,6 +372,16 @@ WebRenderCanvasRendererAsync* WebRenderCanvasData::CreateCanvasRenderer() {
   return mCanvasRenderer.get();
 }
 
+WebRenderRemoteData::WebRenderRemoteData(RenderRootStateManager* aManager,
+                                         nsDisplayItem* aItem)
+    : WebRenderUserData(aManager, aItem) {}
+
+WebRenderRemoteData::~WebRenderRemoteData() {
+  if (mRemoteBrowser) {
+    mRemoteBrowser->UpdateEffects(mozilla::dom::EffectsInfo::FullyHidden());
+  }
+}
+
 WebRenderRenderRootData::WebRenderRenderRootData(
     RenderRootStateManager* aManager, nsDisplayItem* aItem)
     : WebRenderUserData(aManager, aItem) {}

gfx/layers/wr/WebRenderUserData.h

@@ -13,6 +13,7 @@
 #include "mozilla/webrender/WebRenderAPI.h"
 #include "mozilla/layers/AnimationInfo.h"
 #include "mozilla/layers/RenderRootBoundary.h"
+#include "mozilla/dom/RemoteBrowser.h"
 #include "nsIFrame.h"
 #include "ImageTypes.h"
 
@@ -78,6 +79,7 @@ class WebRenderUserData {
     eFallback,
     eAnimation,
     eCanvas,
+    eRemote,
     eGroup,
     eMask,
     eRenderRoot,
@@ -248,6 +250,22 @@ class WebRenderCanvasData : public WebRenderUserData {
   UniquePtr<WebRenderCanvasRendererAsync> mCanvasRenderer;
 };
 
+class WebRenderRemoteData : public WebRenderUserData {
+ public:
+  WebRenderRemoteData(RenderRootStateManager* aManager, nsDisplayItem* aItem);
+  virtual ~WebRenderRemoteData();
+
+  UserDataType GetType() override { return UserDataType::eRemote; }
+  static UserDataType Type() { return UserDataType::eRemote; }
+
+  void SetRemoteBrowser(dom::RemoteBrowser* aBrowser) {
+    mRemoteBrowser = aBrowser;
+  }
+
+ protected:
+  RefPtr<dom::RemoteBrowser> mRemoteBrowser;
+};
+
 class WebRenderRenderRootData : public WebRenderUserData {
  public:
   WebRenderRenderRootData(RenderRootStateManager* aManager,

layout/ipc/RenderFrame.cpp

@@ -278,6 +278,21 @@ bool nsDisplayRemote::CreateWebRenderCommands(
     return true;
   }
 
+  if (RefPtr<RemoteBrowser> remoteBrowser =
+          GetFrameLoader()->GetRemoteBrowser()) {
+    // Generate an effects update notifying the browser it is visible
+    aDisplayListBuilder->AddEffectUpdate(remoteBrowser,
+                                         EffectsInfo::FullyVisible());
+
+    // Create a WebRenderRemoteData to notify the RemoteBrowser when it is no
+    // longer visible
+    RefPtr<WebRenderRemoteData> userData =
+        aManager->CommandBuilder()
+            .CreateOrRecycleWebRenderUserData<WebRenderRemoteData>(
+                this, aBuilder.GetRenderRoot(), nullptr);
+    userData->SetRemoteBrowser(remoteBrowser);
+  }
+
   mOffset = GetContentRectLayerOffset(mFrame, aDisplayListBuilder);
 
   LayoutDeviceRect rect = LayoutDeviceRect::FromAppUnits(