Fix some unit_tests under PlzNavigate

content/public/test/test_renderer_host.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_TEST_RENDERER_HOST_H_
 #define CONTENT_PUBLIC_TEST_TEST_RENDERER_HOST_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 78 matching lines @@
 
   // Simulates a navigation to |url| failing with the error code |error_code|.
   virtual void SimulateNavigationError(const GURL& url, int error_code) = 0;
 
   // Simulates the commit of an error page following a navigation failure.
   virtual void SimulateNavigationErrorPageCommit() = 0;
 
   // Simulates a navigation stopping in the RenderFrameHost.
   virtual void SimulateNavigationStop() = 0;
 
+  // If we are doing a cross-site navigation, this simulates the current
+  // RenderFrameHost notifying that it has unloaded so the pending

[clamy, 2016/08/31 18:23:21]

nit: s/it has unloaded/BeforeUnload has executed

[scottmg, 2016/08/31 19:01:47]

Done.

+  // RenderFrameHost is resumed and can navigate. Note that for some synchronous

[clamy, 2016/08/31 18:23:21]

The Note... sentence seems to belong to the PlzNavigate part.

[scottmg, 2016/08/31 19:01:46]

Done.

+  // navigations (about:blank, javascript urls, etc.), no simulation of the
+  // network stack is required.
+  // PlzNavigate: This simulates a BeforeUnload ACK from the renderer, and the
+  // interaction with the IO thread up until the response is ready to commit.
+  virtual void PrepareForCommitIfNecessary() = 0;
+
   // Calls OnDidCommitProvisionalLoad on the RenderFrameHost with the given
   // information with various sets of parameters. These are helper functions for
   // simulating the most common types of loads.
   //
   // Guidance for calling these:
   // - nav_entry_id should be 0 if simulating a renderer-initiated navigation;
   //   if simulating a browser-initiated one, pass the GetUniqueID() value of
   //   the NavigationController's PendingEntry.
   // - did_create_new_entry should be true if simulating a navigation that
   //   created a new navigation entry; false for history navigations, reloads,
@@ skipping 173 matching lines @@
   std::unique_ptr<aura::test::AuraTestHelper> aura_test_helper_;
 #endif
   RenderViewHostTestEnabler rvh_test_enabler_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewHostTestHarness);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_TEST_TEST_RENDERER_HOST_H_