DevTools: [Android] implement RenderWidgetHostViewAndroid::CopyFromCompositingSurface

content/port/browser/render_view_host_delegate_view.h

 // Copyright (c) 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_PORT_BROWSER_RENDER_VIEW_HOST_DELEGATE_VIEW_H_
 #define CONTENT_PORT_BROWSER_RENDER_VIEW_HOST_DELEGATE_VIEW_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 50 matching lines @@
   virtual void UpdateDragCursor(WebKit::WebDragOperation operation) {}
 
   // Notification that view for this delegate got the focus.
   virtual void GotFocus() {}
 
   // Callback to inform the browser that the page is returning the focus to
   // the browser's chrome. If reverse is true, it means the focus was
   // retrieved by doing a Shift-Tab.
   virtual void TakeFocus(bool reverse) {}
 
+  // Captures screenshot and compresses pixels using given |format|,
+  // |quality| and |scale|.
+  // - |format| should be one of of "jpeg", "png" and "webp"
+  // - |quality| is in range [0, 100], is format-specific
+  // - |scale| is from range (0, 1]
+  virtual bool GrabSnapshot(const std::string& format,
+                            int quality,
+                            double scale,
+                            std::vector<uint8>* data) = 0;
+
  protected:
   virtual ~RenderViewHostDelegateView() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PORT_BROWSER_RENDER_VIEW_HOST_DELEGATE_VIEW_H_