Expose Gamepad API instance for Cardboard button

chrome/browser/android/vr_shell/vr_gl_thread.cc

 // Copyright 2016 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 "chrome/browser/android/vr_shell/vr_gl_thread.h"
 
 #include <utility>
 
 #include "chrome/browser/android/vr_shell/ui_interface.h"
 #include "chrome/browser/android/vr_shell/ui_scene.h"
@@ skipping 96 matching lines @@
   main_thread_task_runner_->PostTask(
       FROM_HERE,
       base::Bind(&VrShell::OnContentPaused, weak_vr_shell_, enabled));
 }
 
 void VrGLThread::NavigateBack() {
   main_thread_task_runner_->PostTask(
       FROM_HERE, base::Bind(&VrShell::NavigateBack, weak_vr_shell_));
 }
 
+void VrGLThread::ToggleCardboardGamepad(bool enabled) {
+  main_thread_task_runner_->PostTask(
+      FROM_HERE,
+      base::Bind(&VrShell::ToggleCardboardGamepad, weak_vr_shell_, enabled));
+}
+
 void VrGLThread::SetFullscreen(bool enabled) {
   WaitUntilThreadStarted();
   task_runner()->PostTask(FROM_HERE, base::Bind(&UiSceneManager::SetFullscreen,
                                                 weak_scene_manager_, enabled));
 }
 
 void VrGLThread::SetHistoryButtonsEnabled(bool can_go_back,
                                           bool can_go_forward) {
   WaitUntilThreadStarted();
   task_runner()->PostTask(
@@ skipping 40 matching lines @@
                                      weak_scene_manager_, secure));
 }
 
 void VrGLThread::CleanUp() {
   scene_manager_.reset();
   vr_shell_gl_.reset();
   scene_.reset();
 }
 
 }  // namespace vr_shell