Make RendererMediaPlayerManager a RenderFrameObserver.

content/renderer/render_widget.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_widget.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/debug/trace_event_synthetic_delay.h"
@@ skipping 1188 matching lines @@
 }
 
 void RenderWidget::didBecomeReadyForAdditionalInput() {
   TRACE_EVENT0("renderer", "RenderWidget::didBecomeReadyForAdditionalInput");
   FlushPendingInputEventAck();
 }
 
 void RenderWidget::DidCommitCompositorFrame() {
   FOR_EACH_OBSERVER(RenderFrameImpl, swapped_out_frames_,
                     DidCommitCompositorFrame());
+#if defined(VIDEO_HOLE)
+  // Not using FOR_EACH_OBSERVER because |swapped_out_frames_| and
+  // |video_hole_frames_| may have common frames.
+  if (!video_hole_frames_.might_have_observers())
+    return;
+  ObserverListBase<RenderFrameImpl>::Iterator iter(video_hole_frames_);
+  RenderFrameImpl* frame;
+  while ((frame = iter.GetNext()) != NULL) {
+    // Prevent duplicate notification of DidCommitCompositorFrame().
+    if (!swapped_out_frames_.HasObserver(frame))
+      frame->DidCommitCompositorFrame();
+  }
+#endif  // defined(VIDEO_HOLE)
 }
 
 void RenderWidget::didCommitAndDrawCompositorFrame() {
   TRACE_EVENT0("gpu", "RenderWidget::didCommitAndDrawCompositorFrame");
   // Accelerated FPS tick for performance tests. See
   // tab_capture_performancetest.cc.  NOTE: Tests may break if this event is
   // renamed or moved.
   UNSHIPPED_TRACE_EVENT_INSTANT0("test_fps", "TestFrameTickGPU",
                                  TRACE_EVENT_SCOPE_THREAD);
   // Notify subclasses that we initiated the paint operation.
@@ skipping 854 matching lines @@
 }
 
 void RenderWidget::RegisterSwappedOutChildFrame(RenderFrameImpl* frame) {
   swapped_out_frames_.AddObserver(frame);
 }
 
 void RenderWidget::UnregisterSwappedOutChildFrame(RenderFrameImpl* frame) {
   swapped_out_frames_.RemoveObserver(frame);
 }
 
+#if defined(VIDEO_HOLE)
+void RenderWidget::RegisterVideoHoleFrame(RenderFrameImpl* frame) {
+  video_hole_frames_.AddObserver(frame);
+}
+
+void RenderWidget::UnregisterVideoHoleFrame(RenderFrameImpl* frame) {
+  video_hole_frames_.RemoveObserver(frame);
+}
+#endif  // defined(VIDEO_HOLE)
+
 }  // namespace content