Make cc::Display not own its BeginFrameSource

content/browser/renderer_host/compositor_impl_android.h

Index: content/browser/renderer_host/compositor_impl_android.h
diff --git a/content/browser/renderer_host/compositor_impl_android.h b/content/browser/renderer_host/compositor_impl_android.h
index 6638afd051f6b5bbf7f1a1d209d6571d6d0ee347..6bfa7f64c753ab1d19b7754e037645bc3cae2f4c 100644
--- a/content/browser/renderer_host/compositor_impl_android.h
+++ b/content/browser/renderer_host/compositor_impl_android.h
@@ -15,6 +15,7 @@
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/timer/timer.h"
+#include "cc/scheduler/begin_frame_source.h"
 #include "cc/trees/layer_tree_host_client.h"
 #include "cc/trees/layer_tree_host_single_thread_client.h"
 #include "content/common/content_export.h"
@@ -149,6 +150,7 @@ class CONTENT_EXPORT CompositorImpl
   ui::ResourceManagerImpl resource_manager_;
 
   std::unique_ptr<cc::Display> display_;
+  std::unique_ptr<cc::BeginFrameSource> begin_frame_source_;
 
   gfx::Size size_;
   bool has_transparent_background_;