VR: Disable Overscroll Glow in VrShell

chrome/browser/android/vr_shell/vr_shell.h

 // 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.
 
 #ifndef CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_H_
 #define CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_H_
 
 #include <jni.h>
 
 #include <memory>
@@ skipping 135 matching lines @@
 
   // Perform a UI action triggered by the javascript API.
   void DoUiActionOnUI(const UiAction action);
 
   void SetContentCssSizeOnUI(float width, float height, float dpr);
   void SetUiCssSizeOnUI(float width, float height, float dpr);
 
  private:
   ~VrShell() override;
   void LoadUIContentOnUI();
+  void SetShowingOverscrollGlowOnUI(bool showing_glow);
   void DrawVrShellOnGL(const gvr::Mat4f& head_pose, gvr::Frame &frame);
   void DrawUiViewOnGL(const gvr::Mat4f* head_pose,
                       const std::vector<const ContentRectangle*>& elements,
                       const gvr::Sizei& render_size, int viewport_offset);
   void DrawElementsOnGL(const gvr::Mat4f& render_matrix,
                         const std::vector<const ContentRectangle*>& elements);
   void DrawCursorOnGL(const gvr::Mat4f& render_matrix);
   void DrawWebVrOnGL();
   bool WebVrPoseByteIsValidOnGL(int pose_index_byte);
 
@@ skipping 84 matching lines @@
   base::WeakPtrFactory<VrShell> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VrShell);
 };
 
 bool RegisterVrShell(JNIEnv* env);
 
 }  // namespace vr_shell
 
 #endif  // CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_H_