Added support for GVR controllers

device/vr/android/gvr/gvr_device_provider.cc

Index: device/vr/android/gvr/gvr_device_provider.cc
diff --git a/device/vr/android/gvr/gvr_device_provider.cc b/device/vr/android/gvr/gvr_device_provider.cc
index 626526e854d3c8ae655efc1364a7f746f202b110..34d3cdafce1ec82b321a9940a47389fdfaf3c668 100644
--- a/device/vr/android/gvr/gvr_device_provider.cc
+++ b/device/vr/android/gvr/gvr_device_provider.cc
@@ -12,9 +12,12 @@
 #include "base/android/scoped_java_ref.h"
 #include "device/vr/android/gvr/gvr_delegate.h"
 #include "device/vr/android/gvr/gvr_device.h"
+#include "device/vr/android/gvr/gvr_gamepad_data_fetcher.h"
 #include "device/vr/vr_device_manager.h"
 #include "jni/GvrDeviceProvider_jni.h"
 #include "third_party/gvr-android-sdk/src/ndk-beta/include/vr/gvr/capi/include/gvr.h"
+#include "third_party/gvr-android-sdk/src/ndk-beta/include/vr/gvr/capi/include/gvr_controller.h"
+#include "third_party/gvr-android-sdk/src/ndk-beta/include/vr/gvr/capi/include/gvr_types.h"
 
 using base::android::AttachCurrentThread;
 using base::android::GetApplicationContext;
@@ -67,6 +70,7 @@ class GvrNonPresentingDelegate : public GvrDelegate {
  private:
   base::android::ScopedJavaGlobalRef<jobject> j_device_;
   std::unique_ptr<gvr::GvrApi> gvr_api_;
+  std::unique_ptr<gvr::GvrApi> controller_api_;
 };
 
 GvrDeviceProvider::GvrDeviceProvider()
@@ -74,6 +78,9 @@ GvrDeviceProvider::GvrDeviceProvider()
       main_thread_task_runner_(base::ThreadTaskRunnerHandle::Get()) {}
 
 GvrDeviceProvider::~GvrDeviceProvider() {
+  GamepadDataFetcherManager::GetInstance()->RemoveSourceFactory(
+      GAMEPAD_SOURCE_GVR);
+
   ExitPresent();
 }
 
@@ -89,6 +96,9 @@ void GvrDeviceProvider::Initialize() {
     non_presenting_delegate_.reset(new GvrNonPresentingDelegate());
     if (non_presenting_delegate_->gvr_api()) {
       vr_device_.reset(new GvrDevice(this, non_presenting_delegate_.get()));
+
+      GamepadDataFetcherManager::GetInstance()->AddFactory(
+          new GvrGamepadDataFetcher::Factory(non_presenting_delegate_.get()));
     }
   }
 }