Send size to NativeViewportClient::OnCreated instead of GLES2Client::DidCreateContext

mojo/services/gles2/gles2.mojom

Index: mojo/services/gles2/gles2.mojom
diff --git a/mojo/services/gles2/gles2.mojom b/mojo/services/gles2/gles2.mojom
index 2e78ba336e54981ae5a33349f16c1689ef2c30b9..a27fd536a700624f6983584b2e6c5e1b65eba7f3 100644
--- a/mojo/services/gles2/gles2.mojom
+++ b/mojo/services/gles2/gles2.mojom
@@ -13,7 +13,7 @@ interface GLES2 {
 
 [Peer=GLES2]
 interface GLES2Client {
-  void DidCreateContext(uint64 encoded, uint32 width, uint32 height);
+  void DidCreateContext(uint64 encoded);
   void ContextLost();
   void DrawAnimationFrame();
 };