Decouple VR Shell DPR and CSS size from Physical Displays.

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 71 matching lines @@
   void OnDomContentsLoaded();
 
   // device::GvrDelegate implementation
   void SetWebVRSecureOrigin(bool secure_origin) override;
   void SubmitWebVRFrame() override;
   void UpdateWebVRTextureBounds(
       int eye, float left, float top, float width, float height) override;
   gvr::GvrApi* gvr_api() override;
   void SetGvrPoseForWebVr(const gvr::Mat4f& pose, uint32_t pose_num) override;
 
-  void ContentSurfaceChanged(
+  void SurfacesChanged(
       JNIEnv* env,
       const base::android::JavaParamRef<jobject>& object,
-      jint width,
-      jint height,
-      const base::android::JavaParamRef<jobject>& surface);
-  void UiSurfaceChanged(
+      const base::android::JavaParamRef<jobject>& content_surface,
+      const base::android::JavaParamRef<jobject>& ui_surface);
+
+  void ContentBoundsChanged(
       JNIEnv* env,
       const base::android::JavaParamRef<jobject>& object,
-      jint width,
-      jint height,
-      const base::android::JavaParamRef<jobject>& surface);
+      jint width, jint height);
+
+  void UIBoundsChanged(
+      JNIEnv* env,
+      const base::android::JavaParamRef<jobject>& object,
+      jint width, jint height);
 
   // Called from non-render thread to queue a callback onto the render thread.
   // The render thread checks for callbacks and processes them between frames.
   void QueueTask(base::Callback<void()>& callback);
 
   // Perform a UI action triggered by the javascript API.
   void DoUiAction(const UiAction action);
 
+  void SetContentCssSize(float width, float height, float dpr);
+  void SetUiCssSize(float width, float height, float dpr);
+
  private:
   virtual ~VrShell();
   void LoadUIContent();
   bool IsUiTextureReady();
   // Converts a pixel rectangle to (0..1) float texture coordinates.
   // Callers need to ensure that the texture width/height is
   // initialized by checking IsUiTextureReady() first.
   Rectf MakeUiGlCopyRect(Recti pixel_rect);
   void DrawVrShell(const gvr::Mat4f& head_pose);
   void DrawEye(const gvr::Mat4f& view_matrix,
@@ skipping 64 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_