Rewrite std::string("") to std::string(), Linux edition.

webkit/media/crypto/ppapi_decryptor.cc

 // 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.
 
 #include "webkit/media/crypto/ppapi_decryptor.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
@@ skipping 50 matching lines @@
     }
     plugin_cdm_delegate_->SetKeyEventCallbacks(
         base::Bind(&PpapiDecryptor::KeyAdded, weak_this_),
         base::Bind(&PpapiDecryptor::KeyError, weak_this_),
         base::Bind(&PpapiDecryptor::KeyMessage, weak_this_),
         base::Bind(&PpapiDecryptor::NeedKey, weak_this_));
   }
 
   if (!plugin_cdm_delegate_->GenerateKeyRequest(
       key_system, type, init_data, init_data_length)) {
-    ReportFailureToCallPlugin(key_system, "");
+    ReportFailureToCallPlugin(key_system, std::string());
     return false;
   }
 
   return true;
 }
 
 void PpapiDecryptor::AddKey(const std::string& key_system,
                             const uint8* key,
                             int key_length,
                             const uint8* init_data,
@@ skipping 200 matching lines @@
                              const std::string& session_id,
                              const std::string& type,
                              scoped_ptr<uint8[]> init_data,
                              int init_data_size) {
   DCHECK(render_loop_proxy_->BelongsToCurrentThread());
   need_key_cb_.Run(key_system, session_id, type,
                    init_data.Pass(), init_data_size);
 }
 
 }  // namespace webkit_media