Implement webview.captureVisibleRegion()

content/public/test/browser_test_utils.cc

 // 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.
 
 #include "content/public/test/browser_test_utils.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/auto_reset.h"
@@ skipping 1041 matching lines @@
 }
 
 bool WebContentsAddedObserver::RenderViewCreatedCalled() {
   if (child_observer_) {
     return child_observer_->render_view_created_called_ &&
            child_observer_->main_frame_created_called_;
   }
   return false;
 }
 
+void WaitForFirstFrame(WebContents* web_contents) {
+  RenderWidgetHostViewBase* rwhv_child = static_cast<RenderWidgetHostViewBase*>(
+      web_contents->GetRenderWidgetHostView());
+  // TODO(wjmaclean): Find a better way to avoid sleeping like this.
+  while (rwhv_child->RendererFrameNumber() <= 0) {
+    base::RunLoop run_loop;
+    base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
+        FROM_HERE, run_loop.QuitClosure(),
+        base::TimeDelta::FromMilliseconds(10));
+    run_loop.Run();
+  }
+}
+
 bool RequestFrame(WebContents* web_contents) {
   DCHECK(web_contents);
   return RenderWidgetHostImpl::From(
              web_contents->GetRenderViewHost()->GetWidget())
       ->ScheduleComposite();
 }
 
 FrameWatcher::FrameWatcher()
     : BrowserMessageFilter(ViewMsgStart), frames_to_wait_(0) {
 }
@@ skipping 25 matching lines @@
 void FrameWatcher::WaitFrames(int frames_to_wait) {
   if (frames_to_wait <= 0)
     return;
   base::RunLoop run_loop;
   base::AutoReset<base::Closure> reset_quit(&quit_, run_loop.QuitClosure());
   base::AutoReset<int> reset_frames_to_wait(&frames_to_wait_, frames_to_wait);
   run_loop.Run();
 }
 
 }  // namespace content