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

chrome/test/chromedriver/chrome/automation_extension.cc

 // Copyright (c) 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.
 
 #include "chrome/test/chromedriver/chrome/automation_extension.h"
 
 #include "base/time.h"
 #include "base/values.h"
 #include "chrome/test/chromedriver/chrome/status.h"
 #include "chrome/test/chromedriver/chrome/web_view.h"
@@ skipping 34 matching lines @@
   update_info.SetString("state", "maximized");
   return UpdateWindow(update_info);
 }
 
 Status AutomationExtension::GetWindowInfo(int* x,
                                           int* y,
                                           int* width,
                                           int* height) {
   base::ListValue args;
   scoped_ptr<base::Value> result;
-  Status status = web_view_->CallAsyncFunction(
-      "", "getWindowInfo", args, base::TimeDelta::FromSeconds(10), &result);
+  Status status = web_view_->CallAsyncFunction(std::string(),
+                                               "getWindowInfo",
+                                               args,
+                                               base::TimeDelta::FromSeconds(10),
+                                               &result);
   if (status.IsError())
     return status;
 
   int temp_x, temp_y, temp_width, temp_height;
   base::DictionaryValue* dict;
   if (!result->GetAsDictionary(&dict) ||
       !dict->GetInteger("left", &temp_x) ||
       !dict->GetInteger("top", &temp_y) ||
       !dict->GetInteger("width", &temp_width) ||
       !dict->GetInteger("height", &temp_height)) {
     return Status(kUnknownError, "received invalid window info");
   }
   *x = temp_x;
   *y = temp_y;
   *width = temp_width;
   *height = temp_height;
   return Status(kOk);
 }
 
 Status AutomationExtension::UpdateWindow(
     const base::DictionaryValue& update_info) {
   base::ListValue args;
   args.Append(update_info.DeepCopy());
   scoped_ptr<base::Value> result;
-  return web_view_->CallAsyncFunction(
-      "", "updateWindow", args, base::TimeDelta::FromSeconds(10), &result);
+  return web_view_->CallAsyncFunction(std::string(),
+                                      "updateWindow",
+                                      args,
+                                      base::TimeDelta::FromSeconds(10),
+                                      &result);
 }