Refactor GVR controller gamepad API integration

chrome/browser/android/vr_shell/vr_shell_delegate.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_shell_delegate.h"
 
 #include <utility>
 
 #include "base/android/jni_android.h"
 #include "chrome/browser/android/vr_shell/non_presenting_gvr_delegate.h"
 #include "device/vr/android/gvr/gvr_device.h"
 #include "device/vr/android/gvr/gvr_device_provider.h"
-#include "device/vr/android/gvr/gvr_gamepad_data_fetcher.h"
 #include "jni/VrShellDelegate_jni.h"
 
 using base::android::JavaParamRef;
 using base::android::AttachCurrentThread;
 
 namespace vr_shell {
 
 VrShellDelegate::VrShellDelegate(JNIEnv* env, jobject obj)
     : weak_ptr_factory_(this) {
   j_vr_shell_delegate_.Reset(env, obj);
@@ skipping 25 matching lines @@
   delegate_ = delegate;
   // Clean up the non-presenting delegate.
   if (delegate_ && non_presenting_delegate_) {
     non_presenting_delegate_ = nullptr;
     JNIEnv* env = AttachCurrentThread();
     Java_VrShellDelegate_shutdownNonPresentingNativeContext(
         env, j_vr_shell_delegate_.obj());
   }
   if (device_provider_) {
     device::GvrDevice* device = device_provider_->Device();
-    device::GamepadDataFetcherManager::GetInstance()->AddFactory(
-        new device::GvrGamepadDataFetcher::Factory(context, device->id()));
     device->OnDelegateChanged();
   }
 
   delegate_->UpdateVSyncInterval(timebase_nanos_, interval_seconds_);
 }
 
 void VrShellDelegate::RemoveDelegate() {
   delegate_ = nullptr;
-  device::GamepadDataFetcherManager::GetInstance()->RemoveSourceFactory(
-      device::GAMEPAD_SOURCE_GVR);
   if (device_provider_) {
     CreateNonPresentingDelegate();
     device_provider_->Device()->OnDelegateChanged();
   }
 }
 
 void VrShellDelegate::SetPresentResult(JNIEnv* env,
                                        const JavaParamRef<jobject>& obj,
                                        jboolean result) {
   CHECK(!present_callback_.is_null());
@@ skipping 138 matching lines @@
 jlong Init(JNIEnv* env, const JavaParamRef<jobject>& obj) {
   return reinterpret_cast<intptr_t>(new VrShellDelegate(env, obj));
 }
 
 static void OnLibraryAvailable(JNIEnv* env, const JavaParamRef<jclass>& clazz) {
   device::GvrDelegateProvider::SetInstance(
       base::Bind(&VrShellDelegate::CreateVrShellDelegate));
 }
 
 }  // namespace vr_shell