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

chrome/browser/google_apis/gdata_wapi_service.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 "chrome/browser/google_apis/gdata_wapi_service.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 181 matching lines @@
 // Because GData WAPI support is expected to be gone somehow soon by migration
 // to the Drive API v2, so we'll reuse GetResourceListOperation to implement
 // following methods, instead of cleaning the operation class.
 
 void GDataWapiService::GetAllResourceList(
     const GetResourceListCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!callback.is_null());
 
   runner_->StartOperationWithRetry(
-      new GetResourceListOperation(
-          operation_registry(),
-          url_request_context_getter_,
-          url_generator_,
-          GURL(),  // No override url
-          0,  // start changestamp
-          "",  // empty search query
-          "",  // no directory resource id
-          callback));
+      new GetResourceListOperation(operation_registry(),
+                                   url_request_context_getter_,
+                                   url_generator_,
+                                   GURL(),         // No override url
+                                   0,              // start changestamp
+                                   std::string(),  // empty search query
+                                   std::string(),  // no directory resource id
+                                   callback));
 }
 
 void GDataWapiService::GetResourceListInDirectory(
     const std::string& directory_resource_id,
     const GetResourceListCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!directory_resource_id.empty());
   DCHECK(!callback.is_null());
 
   runner_->StartOperationWithRetry(
-      new GetResourceListOperation(
-          operation_registry(),
-          url_request_context_getter_,
-          url_generator_,
-          GURL(),  // No override url
-          0,  // start changestamp
-          "",  // empty search query
-          directory_resource_id,
-          callback));
+      new GetResourceListOperation(operation_registry(),
+                                   url_request_context_getter_,
+                                   url_generator_,
+                                   GURL(),         // No override url
+                                   0,              // start changestamp
+                                   std::string(),  // empty search query
+                                   directory_resource_id,
+                                   callback));
 }
 
 void GDataWapiService::Search(const std::string& search_query,
                               const GetResourceListCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!search_query.empty());
   DCHECK(!callback.is_null());
 
   runner_->StartOperationWithRetry(
-      new GetResourceListOperation(
-          operation_registry(),
-          url_request_context_getter_,
-          url_generator_,
-          GURL(),  // No override url
-          0,  // start changestamp
-          search_query,
-          "",  // no directory resource id
-          callback));
+      new GetResourceListOperation(operation_registry(),
+                                   url_request_context_getter_,
+                                   url_generator_,
+                                   GURL(),         // No override url
+                                   0,              // start changestamp
+                                   search_query,
+                                   std::string(),  // no directory resource id
+                                   callback));
 }
 
 void GDataWapiService::SearchInDirectory(
     const std::string& search_query,
     const std::string& directory_resource_id,
     const GetResourceListCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!search_query.empty());
   DCHECK(!directory_resource_id.empty());
   DCHECK(!callback.is_null());
 
   runner_->StartOperationWithRetry(
       new GetResourceListOperation(
           operation_registry(),
           url_request_context_getter_,
           url_generator_,
           GURL(),  // No override url
           0,  // start changestamp
           search_query,
           directory_resource_id,
           callback));
 }
 
 void GDataWapiService::GetChangeList(int64 start_changestamp,
                                      const GetResourceListCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!callback.is_null());
 
   runner_->StartOperationWithRetry(
-      new GetResourceListOperation(
-          operation_registry(),
-          url_request_context_getter_,
-          url_generator_,
-          GURL(),  // No override url
-          start_changestamp,
-          "",  // empty search query
-          "",  // no directory resource id
-          callback));
+      new GetResourceListOperation(operation_registry(),
+                                   url_request_context_getter_,
+                                   url_generator_,
+                                   GURL(),         // No override url
+                                   start_changestamp,
+                                   std::string(),  // empty search query
+                                   std::string(),  // no directory resource id
+                                   callback));
 }
 
 void GDataWapiService::ContinueGetResourceList(
     const GURL& override_url,
     const GetResourceListCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!override_url.is_empty());
   DCHECK(!callback.is_null());
 
   runner_->StartOperationWithRetry(
-      new GetResourceListOperation(
-          operation_registry(),
-          url_request_context_getter_,
-          url_generator_,
-          override_url,
-          0,  // start changestamp
-          "",  // empty search query
-          "",  // no directory resource id
-          callback));
+      new GetResourceListOperation(operation_registry(),
+                                   url_request_context_getter_,
+                                   url_generator_,
+                                   override_url,
+                                   0,              // start changestamp
+                                   std::string(),  // empty search query
+                                   std::string(),  // no directory resource id
+                                   callback));
 }
 
 void GDataWapiService::GetResourceEntry(
     const std::string& resource_id,
     const GetResourceEntryCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!callback.is_null());
 
   runner_->StartOperationWithRetry(
       new GetResourceEntryOperation(
@@ skipping 309 matching lines @@
 }
 
 void GDataWapiService::OnProgressUpdate(
     const OperationProgressStatusList& list) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   FOR_EACH_OBSERVER(
       DriveServiceObserver, observers_, OnProgressUpdate(list));
 }
 
 }  // namespace google_apis