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

chrome/test/chromedriver/chrome/automation_extension.cc

Index: chrome/test/chromedriver/chrome/automation_extension.cc
diff --git a/chrome/test/chromedriver/chrome/automation_extension.cc b/chrome/test/chromedriver/chrome/automation_extension.cc
index 0a91cf5c7dc0c71029e0527a7e2c1a341ca6b9cf..63ad2230f705a187d652648982117d791dcafc15 100644
--- a/chrome/test/chromedriver/chrome/automation_extension.cc
+++ b/chrome/test/chromedriver/chrome/automation_extension.cc
@@ -52,8 +52,11 @@ Status AutomationExtension::GetWindowInfo(int* x,
                                           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;
 
@@ -78,6 +81,9 @@ Status AutomationExtension::UpdateWindow(
   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);
 }