Add SpellingServiceClient::IsAvailable().

chrome/browser/spellchecker/spelling_service_client.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 CHROME_BROWSER_SPELLCHECKER_SPELLING_SERVICE_CLIENT_H_
 #define CHROME_BROWSER_SPELLCHECKER_SPELLING_SERVICE_CLIENT_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 71 matching lines @@
   // Sends a text-check request to the Spelling service. When we send a request
   // to the Spelling service successfully, this function returns true. (This
   // does not mean the service finishes checking text successfully.) We will
   // call |callback| when we receive a text-check response from the service.
   bool RequestTextCheck(Profile* profile,
                         int tag,
                         ServiceType type,
                         const string16& text,
                         const TextCheckCompleteCallback& callback);
 
+  // Returns whether the specified service is avilable for the given profile.

[Avi (use Gerrit), 2012/06/13 14:46:46]

s/avilable/available/

[Hironori Bono, 2012/06/14 03:28:38]

Done.

+  static bool IsAvailable(Profile* profile, ServiceType type);
+
  private:
   // Creates a URLFetcher object used for sending a JSON-RPC request. This
   // function is overriden by unit tests to prevent them from actually sending
   // requests to the Spelling service.
   virtual net::URLFetcher* CreateURLFetcher(const GURL& url);
 
   // Parses a JSON-RPC response from the Spelling service.
   bool ParseResponse(const std::string& data,
                      std::vector<SpellCheckResult>* results);
 
   // The URLFetcher object used for sending a JSON-RPC request.
   scoped_ptr<net::URLFetcher> fetcher_;
 
   // The callback function to be called when we receive a response from the
   // Spelling service and parse it.
   TextCheckCompleteCallback callback_;
 
   // The text checked by the Spelling service.
   string16 text_;
 
   // The identifier provided by users so they can identify a text-check request.
   // When a JSON-RPC call finishes successfully, this value is used as the
   // first parameter to |callback_|.
   int tag_;
 };
 
 #endif  // CHROME_BROWSER_SPELLCHECKER_SPELLING_SERVICE_CLIENT_H_