Location/size change notification when external rendering is enabled

webkit/media/android/webmediaplayer_android.cc

Index: webkit/media/android/webmediaplayer_android.cc
diff --git a/webkit/media/android/webmediaplayer_android.cc b/webkit/media/android/webmediaplayer_android.cc
index 5b00e5dbd3c31626a8eb0ff1563c1f33463dccee..fd0e5a9f410bce15efd68fbb45d0d79d3f2f0679 100644
--- a/webkit/media/android/webmediaplayer_android.cc
+++ b/webkit/media/android/webmediaplayer_android.cc
@@ -480,4 +480,25 @@ 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