Introduce String::fromUTF8Lenient() and use it for cache_name in CacheStorage API.

content/browser/cache_storage/cache_storage_dispatcher_host.h

 // Copyright 2015 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 CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_DISPATCHER_HOST_H_
 #define CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_DISPATCHER_HOST_H_
 
 #include <stdint.h>
 
 #include <list>
@@ skipping 32 matching lines @@
 
   ~CacheStorageDispatcherHost() override;
 
   // Called by Init() on IO thread.
   void CreateCacheListener(CacheStorageContextImpl* context);
 
   // The message receiver functions for the CacheStorage API:
   void OnCacheStorageHas(int thread_id,
                          int request_id,
                          const GURL& origin,
-                         const base::string16& cache_name);
+                         const std::string& cache_name);
   void OnCacheStorageOpen(int thread_id,
                           int request_id,
                           const GURL& origin,
-                          const base::string16& cache_name);
+                          const std::string& cache_name);
   void OnCacheStorageDelete(int thread_id,
                             int request_id,
                             const GURL& origin,
-                            const base::string16& cache_name);
+                            const std::string& cache_name);
   void OnCacheStorageKeys(int thread_id, int request_id, const GURL& origin);
   void OnCacheStorageMatch(int thread_id,
                            int request_id,
                            const GURL& origin,
                            const ServiceWorkerFetchRequest& request,
                            const CacheStorageCacheQueryParams& match_params);
 
   // The message receiver functions for the Cache API:
   void OnCacheMatch(int thread_id,
                     int request_id,
@@ skipping 90 matching lines @@
   UUIDToBlobDataHandleList blob_handle_store_;
 
   scoped_refptr<CacheStorageContextImpl> context_;
 
   DISALLOW_COPY_AND_ASSIGN(CacheStorageDispatcherHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_DISPATCHER_HOST_H_