Refactor GVR controller gamepad API integration

chrome/browser/android/vr_shell/vr_controller.h

Index: chrome/browser/android/vr_shell/vr_controller.h
diff --git a/chrome/browser/android/vr_shell/vr_controller.h b/chrome/browser/android/vr_shell/vr_controller.h
index 8e70fd139a70d9618efe9ac606e49f6fb3a09197..b8b878590162ebd29b8313eefb973bea9de54e85 100644
--- a/chrome/browser/android/vr_shell/vr_controller.h
+++ b/chrome/browser/android/vr_shell/vr_controller.h
@@ -9,6 +9,7 @@
 #include <vector>
 
 #include "base/macros.h"
+#include "device/vr/android/gvr/gvr_gamepad_data_provider.h"
 #include "third_party/WebKit/public/platform/WebGestureEvent.h"
 #include "third_party/WebKit/public/platform/WebInputEvent.h"
 #include "third_party/gvr-android-sdk/src/libraries/headers/vr/gvr/capi/include/gvr_types.h"
@@ -37,6 +38,8 @@ class VrController {
   // Must be called when the GL renderer gets OnSurfaceCreated().
   void Initialize(gvr_context* gvr_context);
 
+  device::GvrGamepadData GetGamepadData();
+
   // Must be called when the GL renderer gets OnDrawFrame().
   void UpdateState();
 
@@ -130,6 +133,9 @@ class VrController {
   bool zoom_in_progress_ = false;
   bool touch_position_changed_ = false;
 
+  // Handedness from user prefs (currently only read once on initialization)
+  gvr::ControllerHandedness handedness_;
+
   // Current touch info after the extrapolation.
   std::unique_ptr<TouchInfo> touch_info_;