Fix blits from multisampled renderbuffers to alpha:false WebGL back buffer.

gpu/command_buffer/client/gles2_cmd_helper_autogen.h

Index: gpu/command_buffer/client/gles2_cmd_helper_autogen.h
diff --git a/gpu/command_buffer/client/gles2_cmd_helper_autogen.h b/gpu/command_buffer/client/gles2_cmd_helper_autogen.h
index 834b474f6e235ccfe64b97a2daa622f758b91014..2573fd9bc362655522e72c056a42ae9b9d5cc4a1 100644
--- a/gpu/command_buffer/client/gles2_cmd_helper_autogen.h
+++ b/gpu/command_buffer/client/gles2_cmd_helper_autogen.h
@@ -2651,6 +2651,16 @@ void BindTexImage2DCHROMIUM(GLenum target, GLint imageId) {
   }
 }
 
+void BindTexImage2DWithInternalformatCHROMIUM(GLenum target,
+                                              GLenum internalformat,
+                                              GLint imageId) {
+  gles2::cmds::BindTexImage2DWithInternalformatCHROMIUM* c =
+      GetCmdSpace<gles2::cmds::BindTexImage2DWithInternalformatCHROMIUM>();
+  if (c) {
+    c->Init(target, internalformat, imageId);
+  }
+}
+
 void ReleaseTexImage2DCHROMIUM(GLenum target, GLint imageId) {
   gles2::cmds::ReleaseTexImage2DCHROMIUM* c =
       GetCmdSpace<gles2::cmds::ReleaseTexImage2DCHROMIUM>();