Only show a beforeunload dialog if a frame has had a user gesture since its load.

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 83 matching lines @@
 // navigation leads to web_contents being destroyed.
 void WaitForLoadStopWithoutSuccessCheck(WebContents* web_contents);
 
 // Waits for |web_contents| to stop loading.  If |web_contents| is not loading
 // returns immediately.  Returns true if the last navigation succeeded (resulted
 // in a committed navigation entry of type PAGE_TYPE_NORMAL).
 // TODO(alexmos): tests that use this function to wait for successful
 // navigations should be refactored to do EXPECT_TRUE(WaitForLoadStop()).
 bool WaitForLoadStop(WebContents* web_contents);
 
+// If a test uses a beforeunload dialog, it must be prepared to avoid flakes.
+// This function collects everything that needs to be done.
+void PrepContentsForBeforeUnloadTest(WebContents* web_contents);
+
 #if defined(USE_AURA) || defined(OS_ANDROID)
 // If WebContent's view is currently being resized, this will wait for the ack
 // from the renderer that the resize is complete and for the
 // WindowEventDispatcher to release the pointer moves. If there's no resize in
 // progress, the method will return right away.
 void WaitForResizeComplete(WebContents* web_contents);
 #endif  // defined(USE_AURA) || defined(OS_ANDROID)
 
 // Causes the specified web_contents to crash. Blocks until it is crashed.
 void CrashTab(WebContents* web_contents);
@@ skipping 728 matching lines @@
 
  private:
   PwnMessageHelper();  // Not instantiable.
 
   DISALLOW_COPY_AND_ASSIGN(PwnMessageHelper);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_TEST_BROWSER_TEST_UTILS_H_