PlzNavigate: Speculatively spawns a renderer process for navigations.

content/test/test_web_contents.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_TEST_TEST_WEB_CONTENTS_H_
 #define CONTENT_TEST_TEST_WEB_CONTENTS_H_
 
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/public/common/web_preferences.h"
 #include "content/public/test/web_contents_tester.h"
@@ skipping 76 matching lines @@
   // Compares the arguments passed in with the expected arguments passed in
   // to |ExpectSetHistoryOffsetAndLength()|.
   void SetHistoryOffsetAndLength(int history_offset,
                                  int history_length) override;
 
   void TestDidFinishLoad(const GURL& url);
   void TestDidFailLoadWithError(const GURL& url,
                                 int error_code,
                                 const base::string16& error_description);
 
+  // PlzNavigate
+  // When running in regular mode returns the same result as a call to
+  // GetPendingMainFrame. When browser side navigation is enabled it returns the
+  // speculative RenderFrameHost for the main frame if one exists. Otherwise
+  // returns nullptr.
+  TestRenderFrameHost* GetNextMainFrameCandidate() const;
+
  protected:
   // The deprecated WebContentsTester still needs to subclass this.
   explicit TestWebContents(BrowserContext* browser_context);
 
  private:
   // WebContentsImpl overrides
   void CreateNewWindow(
       int render_process_id,
       int route_id,
       int main_frame_route_id,
@@ skipping 14 matching lines @@
 
   // Expectations for arguments of |SetHistoryOffsetAndLength()|.
   bool expect_set_history_offset_and_length_;
   int expect_set_history_offset_and_length_history_offset_;
   int expect_set_history_offset_and_length_history_length_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_TEST_TEST_WEB_CONTENTS_H_