Fix some thread safety violations in device::GvrDelegate implementation.

chrome/browser/android/vr_shell/vr_shell_gl.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_GL_H_
 #define CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_GL_H_
 
 #include <memory>
 
 #include "base/cancelable_callback.h"
@@ skipping 57 matching lines @@
   void ContentBoundsChanged(int width, int height);
   void ContentPhysicalBoundsChanged(int width, int height);
   void UIBoundsChanged(int width, int height);
   void UIPhysicalBoundsChanged(int width, int height);
   base::WeakPtr<VrShellGl> GetWeakPtr();
 
   void UpdateWebVRTextureBounds(const gvr::Rectf& left_bounds,
                                 const gvr::Rectf& right_bounds);
   gvr::GvrApi* gvr_api();
   void SetGvrPoseForWebVr(const gvr::Mat4f& pose, uint32_t pose_num);
-  void SetWebVRRenderSurfaceSize(int width, int height);
   gvr::Sizei GetWebVRCompositorSurfaceSize();
 
   UiScene* GetScene() { return scene_.get(); }
 
  private:
   bool InitializeGl();
   void GvrInit(gvr_context* gvr_api);
   void InitializeRenderer();
   void DrawVrShell(const gvr::Mat4f& head_pose, gvr::Frame &frame);
   void DrawUiView(const gvr::Mat4f* head_pose,
@@ skipping 11 matching lines @@
   void SendGesture(InputTarget input_target,
                    std::unique_ptr<blink::WebInputEvent> event);
 
   void OnUIFrameAvailable();
   void OnContentFrameAvailable();
 
   void UpdateVSyncParameters(const base::TimeTicks timebase,
                              const base::TimeDelta interval);
   void ScheduleNextDrawFrame();
 
-  void ForceExitVR();
+  void ForceExitVr();
 
   // samplerExternalOES texture data for UI content image.
   int ui_texture_id_ = 0;
   // samplerExternalOES texture data for main content image.
   int content_texture_id_ = 0;
 
   std::unique_ptr<UiScene> scene_;
 
   scoped_refptr<gl::GLSurface> surface_;
   scoped_refptr<gl::GLContext> context_;
   scoped_refptr<gl::SurfaceTexture> ui_surface_texture_;
   scoped_refptr<gl::SurfaceTexture> content_surface_texture_;
 
   std::unique_ptr<gl::ScopedJavaSurface> ui_surface_;
   std::unique_ptr<gl::ScopedJavaSurface> content_surface_;
 
   std::unique_ptr<gvr::GvrApi> gvr_api_;
   std::unique_ptr<gvr::BufferViewportList> buffer_viewport_list_;
   std::unique_ptr<gvr::BufferViewport> buffer_viewport_;
   std::unique_ptr<gvr::BufferViewport> headlocked_left_viewport_;
   std::unique_ptr<gvr::BufferViewport> headlocked_right_viewport_;
   std::unique_ptr<gvr::BufferViewport> webvr_left_viewport_;
   std::unique_ptr<gvr::BufferViewport> webvr_right_viewport_;
   std::unique_ptr<gvr::SwapChain> swap_chain_;
 
   // Current sizes for the render buffers.
   gvr::Sizei render_size_primary_;
   gvr::Sizei render_size_headlocked_;
 
-  // Intended size for the primary render buffer by UI mode.
-  // For WebVR, a size of 0x0 is used to indicate "not yet ready"
-  // to suppress rendering while still initializing.
-  gvr::Sizei render_size_primary_webvr_ = device::kInvalidRenderTargetSize;
-  gvr::Sizei render_size_primary_vrshell_;
-
   std::unique_ptr<VrShellRenderer> vr_shell_renderer_;
 
   bool touch_pending_ = false;
   gvr::Quatf controller_quat_;
 
   gvr::Vec3f target_point_;
   const ContentRectangle* target_element_ = nullptr;
   InputTarget current_input_target_ = InputTarget::NONE;
   int ui_tex_css_width_ = 0;
   int ui_tex_css_height_ = 0;
@@ skipping 25 matching lines @@
   scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner_;
 
   base::WeakPtrFactory<VrShellGl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VrShellGl);
 };
 
 }  // namespace vr_shell
 
 #endif  // CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_GL_H_