Implement IsSearchProviderInstalled and a test for it.

chrome/browser/renderer_host/render_view_host.h

 // Copyright (c) 2010 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_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 553 matching lines @@
   void OnMsgPasswordFormsVisible(
       const std::vector<webkit_glue::PasswordForm>& visible_forms);
   void OnMsgFormSubmitted(const webkit_glue::FormData& forms);
   void OnMsgStartDragging(const WebDropData& drop_data,
                           WebKit::WebDragOperationsMask operations_allowed,
                           const SkBitmap& image,
                           const gfx::Point& image_offset);
   void OnUpdateDragCursor(WebKit::WebDragOperation drag_operation);
   void OnTakeFocus(bool reverse);
   void OnMsgPageHasOSDD(int32 page_id, const GURL& doc_url, bool autodetected);
+  void OnMsgGetSearchProviderInstallState(const GURL& url,
+                                          IPC::Message* reply_msg);
   void OnDidGetPrintedPagesCount(int cookie, int number_pages);
   void DidPrintPage(const ViewHostMsg_DidPrintPage_Params& params);
   void OnAddMessageToConsole(const std::wstring& message,
                              int32 line_no,
                              const std::wstring& source_id);
   void OnUpdateInspectorSetting(const std::string& key,
                                 const std::string& value);
   void OnForwardToDevToolsAgent(const IPC::Message& message);
   void OnForwardToDevToolsClient(const IPC::Message& message);
   void OnActivateDevToolsWindow();
@@ skipping 135 matching lines @@
   // AutoFill and Autocomplete suggestions.  We accumulate these separately and
   // send them back to the renderer together.
   int autofill_query_id_;
   std::vector<string16> autofill_values_;
   std::vector<string16> autofill_labels_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewHost);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H_