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

content/shell/shell_devtools_delegate.cc

Index: content/shell/shell_devtools_delegate.cc
diff --git a/content/shell/shell_devtools_delegate.cc b/content/shell/shell_devtools_delegate.cc
index 58182f113e88704cc7c393b155012fb3738d7e59..07ebbdea531df36d8cf4dc6ef2d6d18292620469 100644
--- a/content/shell/shell_devtools_delegate.cc
+++ b/content/shell/shell_devtools_delegate.cc
@@ -30,12 +30,11 @@ ShellDevToolsDelegate::ShellDevToolsDelegate(BrowserContext* browser_context,
   devtools_http_handler_ = DevToolsHttpHandler::Start(
 #if defined(OS_ANDROID)
       new net::UnixDomainSocketWithAbstractNamespaceFactory(
-          kSocketName,
-          base::Bind(&CanUserConnectToDevTools)),
+          kSocketName, base::Bind(&CanUserConnectToDevTools)),
 #else
       new net::TCPListenSocketFactory("127.0.0.1", port),
 #endif
-      "",
+      std::string(),
       this);
 }
 
@@ -61,7 +60,7 @@ base::FilePath ShellDevToolsDelegate::GetDebugFrontendDir() {
 }
 
 std::string ShellDevToolsDelegate::GetPageThumbnailData(const GURL& url) {
-  return "";
+  return std::string();
 }
 
 RenderViewHost* ShellDevToolsDelegate::CreateNewTarget() {
@@ -80,7 +79,7 @@ ShellDevToolsDelegate::GetTargetType(RenderViewHost*) {
 
 std::string ShellDevToolsDelegate::GetViewDescription(
     content::RenderViewHost*) {
-  return "";
+  return std::string();
 }
 
 }  // namespace content