Implement webview.captureVisibleRegion()

content/public/test/browser_test_utils.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_PUBLIC_TEST_BROWSER_TEST_UTILS_H_
 #define CONTENT_PUBLIC_TEST_BROWSER_TEST_UTILS_H_
 
 #include <queue>
 #include <string>
 #include <vector>
@@ skipping 390 matching lines @@
   // Callback to WebContentCreated(). Cached so that we can unregister it.
   base::Callback<void(WebContents*)> web_contents_created_callback_;
 
   WebContents* web_contents_;
   scoped_ptr<RenderViewCreatedObserver> child_observer_;
   scoped_refptr<MessageLoopRunner> runner_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsAddedObserver);
 };
 
+// Wait until the first compositor frame swap has occured.
+void WaitForFirstFrame(WebContents* web_contents);
+
 // Request a new frame be drawn, returns false if request fails.
 bool RequestFrame(WebContents* web_contents);
 
 // Watches compositor frame changes, blocking until a frame has been
 // composited. This class is intended to be run on the main thread; to
 // synchronize the main thread against the impl thread.
 class FrameWatcher : public BrowserMessageFilter {
  public:
   FrameWatcher();
 
@@ skipping 13 matching lines @@
 
   int frames_to_wait_;
   base::Closure quit_;
 
   DISALLOW_COPY_AND_ASSIGN(FrameWatcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_TEST_BROWSER_TEST_UTILS_H_