Remove RequestAnimationFrame from mojo, add delayed tasks to RunLoop

mojo/services/gles2/command_buffer.mojom

Index: mojo/services/gles2/command_buffer.mojom
diff --git a/mojo/services/gles2/command_buffer.mojom b/mojo/services/gles2/command_buffer.mojom
index 1f91362eb4d37203580a01c04114bfe733eda84d..faba8accc984dacc50be22ffd633f077aa2bc084 100644
--- a/mojo/services/gles2/command_buffer.mojom
+++ b/mojo/services/gles2/command_buffer.mojom
@@ -31,19 +31,12 @@ interface CommandBuffer {
   DestroyTransferBuffer(int32 id);
   Echo() => ();
 
-  // TODO(piman): move to somewhere else (native_viewport?).
-  RequestAnimationFrames();
-  CancelAnimationFrames();
-
   // TODO(piman): sync points
 };
 
 interface CommandBufferClient {
   DidDestroy();
   LostContext(int32 lost_reason);  // TODO(piman): enum
-
-  // TODO(piman): move to somewhere else (native_viewport?).
-  DrawAnimationFrame();
 };
 
 }