Remove browser-side tracking of accelerated compositing

content/browser/renderer_host/render_widget_host_view_mac.mm

Index: content/browser/renderer_host/render_widget_host_view_mac.mm
diff --git a/content/browser/renderer_host/render_widget_host_view_mac.mm b/content/browser/renderer_host/render_widget_host_view_mac.mm
index bfe907195afd725e1876c000b6261e3bdbe5b466..a7f5b0b50e66393f337fa0517e0d1c46a36017fc 100644
--- a/content/browser/renderer_host/render_widget_host_view_mac.mm
+++ b/content/browser/renderer_host/render_widget_host_view_mac.mm
@@ -1295,6 +1295,8 @@ void RenderWidgetHostViewMac::CopyFromCompositingSurface(
 
     ignore_result(scoped_callback_runner.Release());
     callback.Run(true, target_bitmap);
+  } else {
+    callback.Run(false, SkBitmap());
   }
 }
 
@@ -1309,9 +1311,7 @@ void RenderWidgetHostViewMac::CopyFromCompositingSurfaceToVideoFrame(
   }
 
   base::ScopedClosureRunner scoped_callback_runner(base::Bind(callback, false));
-  if (!render_widget_host_->is_accelerated_compositing_active() ||
-      !compositing_iosurface_ ||
-      !compositing_iosurface_->HasIOSurface())
+  if (!compositing_iosurface_ || !compositing_iosurface_->HasIOSurface())
     return;
 
   if (!target.get()) {
@@ -1340,7 +1340,6 @@ bool RenderWidgetHostViewMac::CanCopyToVideoFrame() const {
     return delegated_frame_host_->CanCopyToVideoFrame();
 
   return (!software_frame_manager_->HasCurrentFrame() &&
-          render_widget_host_->is_accelerated_compositing_active() &&
           compositing_iosurface_ &&
           compositing_iosurface_->HasIOSurface());
 }
@@ -1960,9 +1959,6 @@ void RenderWidgetHostViewMac::OnSwapCompositorFrame(
   }
 }
 
-void RenderWidgetHostViewMac::OnAcceleratedCompositingStateChange() {
-}
-
 void RenderWidgetHostViewMac::AcceleratedSurfaceInitialized(int host_id,
                                                             int route_id) {
 }