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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CHROME_RENDERER_SEARCHBOX_SEARCH_BOUNCER_H_
      6 #define CHROME_RENDERER_SEARCHBOX_SEARCH_BOUNCER_H_
      7 
      8 #include <vector>
      9 
     10 #include "base/basictypes.h"
     11 #include "base/gtest_prod_util.h"
     12 #include "content/public/renderer/render_process_observer.h"
     13 #include "url/gurl.h"
     14 
     15 namespace IPC {
     16 class Message;
     17 }
     18 
     19 // SearchBouncer tracks a set of URLs which should be transferred back to the
     20 // browser process for potential reassignment to an Instant renderer process.
     21 class SearchBouncer : public content::RenderProcessObserver {
     22  public:
     23   SearchBouncer();
     24   virtual ~SearchBouncer();
     25 
     26   // Returns whether a navigation to |url| should bounce back to the browser as
     27   // a potential Instant url. See chrome::ShouldAssignURLToInstantRenderer().
     28   bool ShouldFork(const GURL& url) const;
     29 
     30   // Returns whether |url| is a valid Instant new tab page URL.
     31   bool IsNewTabPage(const GURL& url) const;
     32 
     33   // Exposed for testing.
     34   void OnSetSearchURLs(std::vector<GURL> search_urls, GURL new_tab_page_url);
     35 
     36  private:
     37   FRIEND_TEST_ALL_PREFIXES(SearchBouncerTest, SetSearchURLs);
     38 
     39   // From RenderProcessObserver:
     40   virtual bool OnControlMessageReceived(const IPC::Message& message) OVERRIDE;
     41 
     42   // URLs to bounce back to the browser.
     43   std::vector<GURL> search_urls_;
     44   GURL new_tab_page_url_;
     45 
     46   DISALLOW_COPY_AND_ASSIGN(SearchBouncer);
     47 };
     48 
     49 #endif  // CHROME_RENDERER_SEARCHBOX_SEARCH_BOUNCER_H_
     50