Add 'waitUntilExternalURLLoad' method to TestRunner.

content/shell/renderer/test_runner/TestRunner.h

Index: content/shell/renderer/test_runner/TestRunner.h
diff --git a/content/shell/renderer/test_runner/TestRunner.h b/content/shell/renderer/test_runner/TestRunner.h
index 2bb6d9dbfd16ae47dede197915f2ec6d935d3812..d9928889370b0db89912597d1ab8c2d0882d2741 100644
--- a/content/shell/renderer/test_runner/TestRunner.h
+++ b/content/shell/renderer/test_runner/TestRunner.h
@@ -138,6 +138,7 @@ public:
     bool policyDelegateShouldNotifyDone() const;
     bool shouldInterceptPostMessage() const;
     bool shouldDumpResourcePriorities() const;
+    bool shouldWaitUntilExternURLLoad() const;
     blink::WebNotificationPresenter* notification_presenter() const;
     bool requestPointerLock();
     void requestPointerUnlock();
@@ -440,6 +441,10 @@ private:
     // Sets a flag to enable the mock theme.
     void setUseMockTheme(const CppArgumentList&, CppVariant*);
 
+    // Sets a flag that causes the test to be marked as completed when the
+    // WebFrameClient receives a loadURLExternally() call.
+    void waitUntilExternalURLLoad(const CppArgumentList&, CppVariant*);
+
     ///////////////////////////////////////////////////////////////////////////
     // Methods interacting with the WebTestProxy
 
@@ -700,6 +705,9 @@ private:
 
     bool m_shouldDumpResourcePriorities;
 
+    // If true, ends the test when an external URL is loaded.
+    bool m_shouldWaitUntilExternalURLLoad;
+
     std::set<std::string> m_httpHeadersToClear;
 
     // WAV audio data is stored here.