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

chrome/browser/ui/sync/tab_contents_synced_tab_delegate.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/ui/sync/tab_contents_synced_tab_delegate.h"
 
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/extensions/tab_helper.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sessions/session_tab_helper.h"
@@ skipping 25 matching lines @@
   return web_contents_->IsBeingDestroyed();
 }
 
 Profile* TabContentsSyncedTabDelegate::profile() const {
   return Profile::FromBrowserContext(web_contents_->GetBrowserContext());
 }
 
 std::string TabContentsSyncedTabDelegate::GetExtensionAppId() const {
   const scoped_refptr<const extensions::Extension> extension_app(
       extensions::TabHelper::FromWebContents(web_contents_)->extension_app());
-  return (extension_app.get() ? extension_app->id() : "");
+  return (extension_app.get() ? extension_app->id() : std::string());
 }
 
 int TabContentsSyncedTabDelegate::GetCurrentEntryIndex() const {
   return web_contents_->GetController().GetCurrentEntryIndex();
 }
 
 int TabContentsSyncedTabDelegate::GetEntryCount() const {
   return web_contents_->GetController().GetEntryCount();
 }
 
@@ skipping 13 matching lines @@
   return web_contents_->GetController().GetActiveEntry();
 }
 
 bool TabContentsSyncedTabDelegate::IsPinned() const {
   const browser_sync::SyncedWindowDelegate* window =
       browser_sync::SyncedWindowDelegate::FindSyncedWindowDelegateWithId(
           GetWindowId());
   // We might not have a parent window, e.g. Developer Tools.
   return window ? window->IsTabPinned(this) : false;
 }