android: Migrate old content readback to use async readback (and delegated renderer)

content/browser/android/content_view_core_impl.h

 // Copyright 2012 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 CONTENT_BROWSER_ANDROID_CONTENT_VIEW_CORE_IMPL_H_
 #define CONTENT_BROWSER_ANDROID_CONTENT_VIEW_CORE_IMPL_H_
 
 #include <vector>
 
 #include "base/android/jni_android.h"
@@ skipping 37 matching lines @@
 
   // ContentViewCore implementation.
   virtual base::android::ScopedJavaLocalRef<jobject> GetJavaObject() OVERRIDE;
   virtual WebContents* GetWebContents() const OVERRIDE;
   virtual ui::ViewAndroid* GetViewAndroid() const OVERRIDE;
   virtual ui::WindowAndroid* GetWindowAndroid() const OVERRIDE;
   virtual scoped_refptr<cc::Layer> GetLayer() const OVERRIDE;
   virtual void LoadUrl(NavigationController::LoadURLParams& params) OVERRIDE;
   virtual jint GetCurrentRenderProcessId(JNIEnv* env, jobject obj) OVERRIDE;
   virtual void ShowPastePopup(int x, int y) OVERRIDE;
-  virtual unsigned int GetScaledContentTexture(
+  virtual void GetScaledContentBitmap(
       float scale,
-      gfx::Size* out_size) OVERRIDE;
+      gfx::Size* out_size,
+      const base::Callback<void(bool, const SkBitmap&)>& callback) OVERRIDE;
   virtual float GetDpiScale() const OVERRIDE;
   virtual void RequestContentClipping(const gfx::Rect& clipping,
                                       const gfx::Size& content_size) OVERRIDE;
   virtual void PauseVideo() OVERRIDE;
   virtual void ResumeVideo() OVERRIDE;
   virtual void PauseOrResumeGeolocation(bool should_pause) OVERRIDE;
 
   // --------------------------------------------------------------------------
   // Methods called from Java via JNI
   // --------------------------------------------------------------------------
@@ skipping 285 matching lines @@
   void DeleteScaledSnapshotTexture();
 
   void SendGestureEvent(const blink::WebGestureEvent& event);
 
   // Update focus state of the RenderWidgetHostView.
   void SetFocusInternal(bool focused);
 
   // Send device_orientation_ to renderer.
   void SendOrientationChangeEventInternal();
 
+  // Callback for scaled content readback
+  static void OnFinishGetScaledContentBitmap(
+      const base::Callback<void(bool, const SkBitmap&)>& compositor_callback,
+      bool success,
+      const SkBitmap& bitmap);
+
   // A weak reference to the Java ContentViewCore object.
   JavaObjectWeakGlobalRef java_ref_;
 
   NotificationRegistrar notification_registrar_;
 
   // Reference to the current WebContents used to determine how and what to
   // display in the ContentViewCore.
   WebContentsImpl* web_contents_;
 
   // A compositor layer containing any layer that should be shown.
@@ skipping 20 matching lines @@
   bool geolocation_needs_pause_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentViewCoreImpl);
 };
 
 bool RegisterContentViewCore(JNIEnv* env);
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ANDROID_CONTENT_VIEW_CORE_IMPL_H_