Implement the gamepad API in the IPC proxy

ppapi/examples/gamepad/gamepad.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <cmath>
 #include <stdarg.h>
 #include <stdio.h>
 
 #include "ppapi/c/dev/ppb_console_dev.h"
 #include "ppapi/c/ppb_gamepad.h"
@@ skipping 67 matching lines @@
     if (!image.is_null()) {
       device_context_.ReplaceContents(&image);
       device_context_.Flush(
           callback_factory_.NewCallback(&MyInstance::OnFlush));
     } else {
       printf("NullImage\n");
     }
   }
 
   pp::ImageData PaintImage(const pp::Size& size) {
-    pp::ImageData image(this, PP_IMAGEDATAFORMAT_BGRA_PREMUL, size, false);
+    pp::ImageData image(this, PP_IMAGEDATAFORMAT_BGRA_PREMUL, size, true);
     if (image.is_null())
       return image;
 
     PP_GamepadsSampleData gamepad_data;
     gamepad_->Sample(pp_instance(), &gamepad_data);
 
     if (gamepad_data.length > 1 && gamepad_data.items[0].connected) {
       int width2 = size.width() / 2;
       int height2 = size.height() / 2;
       // Draw 2 axes
@@ skipping 42 matching lines @@
 
 namespace pp {
 
 // Factory function for your specialization of the Module object.
 Module* CreateModule() {
   return new MyModule();
 }
 
 }  // namespace pp