Add WaitForInterstitialReady to browser_test_utils.

content/public/test/browser_test_utils.h

Index: content/public/test/browser_test_utils.h
diff --git a/content/public/test/browser_test_utils.h b/content/public/test/browser_test_utils.h
index 761b5075eacaef16e61c7eece5befa74cae58e6d..99f92c2df101418f47bfff5181514a1a427dc9fd 100644
--- a/content/public/test/browser_test_utils.h
+++ b/content/public/test/browser_test_utils.h
@@ -52,6 +52,7 @@ class EmbeddedTestServer;
 namespace content {
 
 class BrowserContext;
+class InterstitialPage;

[mattm, 2015/01/22 04:51:27]

no longer needed

[meacer, 2015/01/22 18:31:37]

Done.

 class MessageLoopRunner;
 class RenderViewHost;
 class WebContents;
@@ -243,6 +244,9 @@ void WaitForInterstitialDetach(content::WebContents* web_contents);
 void RunTaskAndWaitForInterstitialDetach(content::WebContents* web_contents,
                                          const base::Closure& task);
 
+// Waits until all resources have loaded in the given RenderFrameHost.
+bool WaitForRenderFrameReady(RenderFrameHost* rfh);

[Paweł Hajdan Jr., 2015/01/22 15:43:10]

nit: Please add WARN_UNUSED_RESULT.

[meacer, 2015/01/22 18:31:37]

Done.

+
 // Watches title changes on a WebContents, blocking until an expected title is
 // set.
 class TitleWatcher : public WebContentsObserver {