ppapi: Send sync point whenever the pepper texture changes.

content/renderer/pepper/pepper_plugin_instance_impl.h

Index: content/renderer/pepper/pepper_plugin_instance_impl.h
diff --git a/content/renderer/pepper/pepper_plugin_instance_impl.h b/content/renderer/pepper/pepper_plugin_instance_impl.h
index 52962623d62aeeb93dee222c6f7af662c50499d1..6421d3bef8f76469eaf02a2be5062cda2341a866 100644
--- a/content/renderer/pepper/pepper_plugin_instance_impl.h
+++ b/content/renderer/pepper/pepper_plugin_instance_impl.h
@@ -22,6 +22,7 @@
 #include "content/public/renderer/pepper_plugin_instance.h"
 #include "content/public/renderer/render_frame_observer.h"
 #include "content/renderer/mouse_lock_dispatcher.h"
+#include "gpu/command_buffer/common/mailbox.h"
 #include "ppapi/c/dev/pp_cursor_type_dev.h"
 #include "ppapi/c/dev/ppp_find_dev.h"
 #include "ppapi/c/dev/ppp_printing_dev.h"
@@ -171,7 +172,7 @@ class CONTENT_EXPORT PepperPluginInstanceImpl
 
   // Commit the backing texture to the screen once the side effects some
   // rendering up to an offscreen SwapBuffers are visible.
-  void CommitBackingTexture();
+  void CommitBackingTexture(uint32 sync_point);
 
   // Called when the out-of-process plugin implementing this instance crashed.
   void InstanceCrashed();