Bug 1359993 - Reduce invalidation of video r=nical

gfx/layers/Layers.h

@@ -1813,6 +1813,8 @@ public:
   // matches the frame metrics array length.
 
   virtual void ClearCachedResources() {}
+
+  virtual bool SupportsAsyncUpdate() { return false; }
 private:
   void ScrollMetadataChanged();
 public:

gfx/layers/client/ClientImageLayer.cpp

@@ -59,6 +59,14 @@ protected:
     DestroyBackBuffer();
   }
 
+  virtual bool SupportsAsyncUpdate() override
+  {
+    if (GetImageClientType() == CompositableType::IMAGE_BRIDGE) {
+      return true;
+    }
+    return false;
+  }
+
   virtual void HandleMemoryPressure() override
   {
     if (mImageClient) {

gfx/layers/wr/WebRenderImageLayer.cpp

@@ -90,6 +90,16 @@ WebRenderImageLayer::ClearCachedResources()
   }
 }
 
+bool
+WebRenderImageLayer::SupportsAsyncUpdate()
+{
+  if (GetImageClientType() == CompositableType::IMAGE_BRIDGE &&
+      mPipelineId.isSome()) {
+    return true;
+  }
+  return false;
+}
+
 void
 WebRenderImageLayer::RenderLayer(wr::DisplayListBuilder& aBuilder,
                                  const StackingContextHelper& aSc)

gfx/layers/wr/WebRenderImageLayer.h

@@ -24,6 +24,8 @@ public:
 
   virtual void ClearCachedResources() override;
 
+  virtual bool SupportsAsyncUpdate() override;
+
 protected:
   virtual ~WebRenderImageLayer();
 

layout/generic/nsFrame.cpp

@@ -6681,8 +6681,7 @@ nsIFrame::InvalidateLayer(uint32_t aDisplayItemKey,
 
   // If the layer is being updated asynchronously, and it's being forwarded
   // to a compositor, then we don't need to invalidate.
-  if ((aFlags & UPDATE_IS_ASYNC) && layer &&
-      layer->Manager()->GetBackendType() == LayersBackend::LAYERS_CLIENT) {
+  if ((aFlags & UPDATE_IS_ASYNC) && layer && layer->SupportsAsyncUpdate()) {
     return layer;
   }