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

content/renderer/browser_plugin/browser_plugin.cc

Index: content/renderer/browser_plugin/browser_plugin.cc
diff --git a/content/renderer/browser_plugin/browser_plugin.cc b/content/renderer/browser_plugin/browser_plugin.cc
index 9fe31918111099385a2b8c6938e4aa2445af7f27..62c9733184bda1a3fb0925c5f53b4b0251088d97 100644
--- a/content/renderer/browser_plugin/browser_plugin.cc
+++ b/content/renderer/browser_plugin/browser_plugin.cc
@@ -110,7 +110,7 @@ static std::string PermissionTypeToString(BrowserPluginPermissionType type) {
       NOTREACHED();
       break;
   }
-  return "";
+  return std::string();
 }
 
 typedef std::map<WebKit::WebPluginContainer*,
@@ -227,7 +227,7 @@ void BrowserPlugin::RemoveDOMAttribute(const std::string& attribute_name) {
 std::string BrowserPlugin::GetDOMAttributeValue(
     const std::string& attribute_name) const {
   if (!container())
-    return "";
+    return std::string();
 
   return container()->element().getAttribute(
       WebKit::WebString::fromUTF8(attribute_name)).utf8();