InstantExtended: Send search URLs to renderers.

chrome/renderer/searchbox/search_bouncer.h

+// Copyright (c) 2013 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 CHROME_RENDERER_SEARCHBOX_SEARCH_BOUNCER_H_
+#define CHROME_RENDERER_SEARCHBOX_SEARCH_BOUNCER_H_
+
+#include <vector>
+
+#include "base/basictypes.h"
+#include "content/public/renderer/render_process_observer.h"
+#include "url/gurl.h"
+
+namespace IPC {
+class Message;
+}
+
+// SearchBouncer tracks a set of URLs which should be transferred back to the
+// browser process for potential reassignment to an Instant renderer process.
+class SearchBouncer : public content::RenderProcessObserver {
+ public:
+  SearchBouncer();
+  virtual ~SearchBouncer();
+
+  // Returns whether a navigation to |url| should bounce back to the browser as
+  // a potential Instant url. See chrome::ShouldAssignURLToInstantRenderer().
+  bool ShouldFork(const GURL& url) const;
+
+  // Returns whether |url| is a valid Instant new tab page URL.
+  bool IsNewTabPage(const GURL& url) const;
+
+  // Exposed for testing.
+  void OnSetSearchURLs(std::vector<GURL> search_urls, GURL new_tab_page_url);
+
+ private:
+  // From RenderProcessObserver:
+  virtual bool OnControlMessageReceived(const IPC::Message& message) OVERRIDE;
+
+  // URLs to bounce back to the browser.
+  std::vector<GURL> search_urls_;
+  GURL new_tab_page_url_;
+
+  DISALLOW_COPY_AND_ASSIGN(SearchBouncer);
+};
+
+#endif  // CHROME_RENDERER_SEARCHBOX_SEARCH_BOUNCER_H_