Android media: VideoFrame should not store so many sync points.

media/base/video_frame.cc

Index: media/base/video_frame.cc
diff --git a/media/base/video_frame.cc b/media/base/video_frame.cc
index 272d41dc4c691597a227abbaab023a31a86fc98d..5700dc18477e7ca85023d7e532a064334abccfcf 100644
--- a/media/base/video_frame.cc
+++ b/media/base/video_frame.cc
@@ -650,10 +650,10 @@ VideoFrame::VideoFrame(VideoFrame::Format format,
 
 VideoFrame::~VideoFrame() {
   if (!mailbox_holder_release_cb_.is_null()) {
-    std::vector<uint32> release_sync_points;
+    std::map<uintptr_t, uint32> release_sync_points;
     {
       base::AutoLock locker(release_sync_point_lock_);
-      release_sync_points_.swap(release_sync_points);
+      release_sync_point_map_.swap(release_sync_points);
     }
     base::ResetAndReturn(&mailbox_holder_release_cb_).Run(release_sync_points);
   }
@@ -807,12 +807,12 @@ base::SharedMemoryHandle VideoFrame::shared_memory_handle() const {
   return shared_memory_handle_;
 }
 
-void VideoFrame::AppendReleaseSyncPoint(uint32 sync_point) {
+void VideoFrame::AppendReleaseSyncPoint(uintptr_t client, uint32 sync_point) {
   DCHECK_EQ(format_, NATIVE_TEXTURE);
   if (!sync_point)
     return;
   base::AutoLock locker(release_sync_point_lock_);
-  release_sync_points_.push_back(sync_point);
+  release_sync_point_map_[client] = sync_point;
 }
 
 #if defined(OS_POSIX)