Refactor GVR controller gamepad API integration

chrome/browser/android/vr_shell/vr_shell_delegate.cc

Index: chrome/browser/android/vr_shell/vr_shell_delegate.cc
diff --git a/chrome/browser/android/vr_shell/vr_shell_delegate.cc b/chrome/browser/android/vr_shell/vr_shell_delegate.cc
index 4563d1a04fbeab6197f542c9d37eea07f992f740..ba8827808e3da894a825d673821da8e6d6913414 100644
--- a/chrome/browser/android/vr_shell/vr_shell_delegate.cc
+++ b/chrome/browser/android/vr_shell/vr_shell_delegate.cc
@@ -10,7 +10,6 @@
 #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;
@@ -56,8 +55,6 @@ void VrShellDelegate::SetDelegate(device::GvrDelegate* delegate,
   }
   if (device_provider_) {
     device::GvrDevice* device = device_provider_->Device();
-    device::GamepadDataFetcherManager::GetInstance()->AddFactory(
-        new device::GvrGamepadDataFetcher::Factory(context, device->id()));
     device->OnDelegateChanged();
   }
 
@@ -66,8 +63,6 @@ void VrShellDelegate::SetDelegate(device::GvrDelegate* delegate,
 
 void VrShellDelegate::RemoveDelegate() {
   delegate_ = nullptr;
-  device::GamepadDataFetcherManager::GetInstance()->RemoveSourceFactory(
-      device::GAMEPAD_SOURCE_GVR);
   if (device_provider_) {
     CreateNonPresentingDelegate();
     device_provider_->Device()->OnDelegateChanged();