Location/size change notification when external rendering is enabled

webkit/media/android/webmediaplayer_android.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 "webkit/media/android/webmediaplayer_android.h"
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "cc/layers/video_layer.h"
@@ skipping 462 matching lines @@
 }
 
 void WebMediaPlayerAndroid::SetNeedsEstablishPeer(bool needs_establish_peer) {
   needs_establish_peer_ = needs_establish_peer;
 }
 
 void WebMediaPlayerAndroid::UpdatePlayingState(bool is_playing) {
   is_playing_ = is_playing;
 }
 
+bool WebMediaPlayerAndroid::GetGeometryChange(gfx::RectF* rect) {
+  if (!video_weblayer_)
+    return false;
+
+  // Compute the geometry of video frame layer.
+  cc::Layer* layer = video_weblayer_->layer();
+  rect->set_size(layer->bounds());
+  while (layer) {
+    rect->Offset(layer->position().OffsetFromOrigin());
+    layer = layer->parent();
+  }
+
+  // Return false when the geometry hasn't been changed from the last time.
+  if (last_computed_rect_ == *rect)
+    return false;
+
+  // Store the changed geometry information when it is actually changed.
+  last_computed_rect_ = *rect;
+  return true;
+}
+
 }  // namespace webkit_media