Implement IsSearchProviderInstalled and a test for it.

chrome/renderer/render_view.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_RENDERER_RENDER_VIEW_H_
 #define CHROME_RENDERER_RENDER_VIEW_H_
 
 #include <deque>
 #include <map>
 #include <queue>
@@ skipping 196 matching lines @@
   }
 
   // Called to indicate that there are no matching search results. This is
   // used internally and also called by plugins that support find in page.
   void ReportNoFindInPageResults(int request_id);
 
   // Called from JavaScript window.external.AddSearchProvider() to add a
   // keyword for a provider described in the given OpenSearch document.
   void AddSearchProvider(const std::string& url);
 
+  // Returns the install state for the given search provider url.
+  ViewHostMsg_GetSearchProviderInstallState_Params
+      GetSearchProviderInstallState(const std::string& url);
+
   // Evaluates a string of JavaScript in a particular frame.
   void EvaluateScript(const std::wstring& frame_xpath,
                       const std::wstring& jscript);
 
   // Adds the given file chooser request to the file_chooser_completion_ queue
   // (see that var for more) and requests the chooser be displayed if there are
   // no other waiting items in the queue.
   //
   // Returns true if the chooser was successfully scheduled. False means we
   // didn't schedule anything.
@@ skipping 1069 matching lines @@
   // ADDING NEW DATA? Please see if it fits appropriately in one of the above
   // sections rather than throwing it randomly at the end. If you're adding a
   // bunch of stuff, you should probably create a helper class and put your
   // data and methods on that to avoid bloating RenderView more.
   // ---------------------------------------------------------------------------
 
   DISALLOW_COPY_AND_ASSIGN(RenderView);
 };
 
 #endif  // CHROME_RENDERER_RENDER_VIEW_H_