Additional error logs to track webstore response failures.

chrome/browser/chromeos/app_mode/kiosk_app_data.h

 // Copyright 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_BROWSER_CHROMEOS_APP_MODE_KIOSK_APP_DATA_H_
 #define CHROME_BROWSER_CHROMEOS_APP_MODE_KIOSK_APP_DATA_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 82 matching lines @@
   // Starts to fetch data from web store.
   void StartFetch();
 
   // extensions::WebstoreDataFetcherDelegate overrides:
   virtual void OnWebstoreRequestFailure() OVERRIDE;
   virtual void OnWebstoreResponseParseSuccess(
       base::DictionaryValue* webstore_data) OVERRIDE;
   virtual void OnWebstoreResponseParseFailure(
       const std::string& error) OVERRIDE;
 
+  // Helper function for testing for the existence of |key| in
+  // |response|. Passes |key|'s content via |value| and returns
+  // true when |key| is present.
+  bool CheckResponseKeyValue(const base::DictionaryValue* response,
+                             const char* key,
+                             std::string* value);
+
   KioskAppDataDelegate* delegate_;  // not owned.
   Status status_;
 
   std::string app_id_;
   std::string user_id_;
   std::string name_;
   gfx::ImageSkia icon_;
   scoped_refptr<base::RefCountedString> raw_icon_;
 
   scoped_ptr<extensions::WebstoreDataFetcher> webstore_fetcher_;
   base::FilePath icon_path_;
 
   DISALLOW_COPY_AND_ASSIGN(KioskAppData);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_APP_MODE_KIOSK_APP_DATA_H_