Refactor VR math off of GVR types, onto gfx types where possible.

device/vr/android/gvr/gvr_gamepad_data_provider.h

Index: device/vr/android/gvr/gvr_gamepad_data_provider.h
diff --git a/device/vr/android/gvr/gvr_gamepad_data_provider.h b/device/vr/android/gvr/gvr_gamepad_data_provider.h
index 7aa09e9be8e2c2045ec32d2d5994f8802e5e40fc..fcfcf68b94de7da0f70a65f4a15b72bac9c7d340 100644
--- a/device/vr/android/gvr/gvr_gamepad_data_provider.h
+++ b/device/vr/android/gvr/gvr_gamepad_data_provider.h
@@ -5,7 +5,7 @@
 #ifndef DEVICE_VR_ANDROID_GVR_GAMEPAD_DATA_PROVIDER_H
 #define DEVICE_VR_ANDROID_GVR_GAMEPAD_DATA_PROVIDER_H
 
-#include "third_party/gvr-android-sdk/src/libraries/headers/vr/gvr/capi/include/gvr_types.h"
+#include "device/vr/vr_types.h"
 
 namespace device {
 
@@ -15,10 +15,10 @@ class GvrGamepadDataFetcher;
 // by vr_shell's VrController and consumed by GvrGamepadDataFetcher.
 struct GvrGamepadData {
   int64_t timestamp;
-  gvr_vec2f touch_pos;
-  gvr_quatf orientation;
-  gvr_vec3f accel;
-  gvr_vec3f gyro;
+  gfx::Vector2dF touch_pos;
+  vr::Quatf orientation;
+  gfx::Vector3dF accel;
+  gfx::Vector3dF gyro;
   bool is_touching;
   bool controller_button_pressed;
   bool right_handed;