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

chrome/browser/ui/webui/signin/profile_signin_confirmation_dialog_unittest.cc

Index: chrome/browser/ui/webui/signin/profile_signin_confirmation_dialog_unittest.cc
diff --git a/chrome/browser/ui/webui/signin/profile_signin_confirmation_dialog_unittest.cc b/chrome/browser/ui/webui/signin/profile_signin_confirmation_dialog_unittest.cc
index e24b730cd8110f4101fc9f0d3948e6a2988bd3de..cd6f5feea9bf22ba87520d13a0c82357cfabbaea 100644
--- a/chrome/browser/ui/webui/signin/profile_signin_confirmation_dialog_unittest.cc
+++ b/chrome/browser/ui/webui/signin/profile_signin_confirmation_dialog_unittest.cc
@@ -142,11 +142,11 @@ class ProfileSigninConfirmationDialogTest : public testing::Test {
                                    false);
 
     // Create a dialog, but don't display it.
-    dialog_ = new ProfileSigninConfirmationDialog(
-        profile_.get(), "",
-        base::Bind(&base::DoNothing),
-        base::Bind(&base::DoNothing),
-        base::Bind(&base::DoNothing));
+    dialog_ = new ProfileSigninConfirmationDialog(profile_.get(),
+                                                  std::string(),
+                                                  base::Bind(&base::DoNothing),
+                                                  base::Bind(&base::DoNothing),
+                                                  base::Bind(&base::DoNothing));
   }
 
   virtual void TearDown() OVERRIDE {
@@ -204,10 +204,10 @@ TEST_F(ProfileSigninConfirmationDialogTest, PromptForNewProfile_Extensions) {
               &ProfileSigninConfirmationDialog::CheckShouldPromptForNewProfile,
               base::Unretained(dialog_))));
 
-  scoped_refptr<extensions::Extension> extension = CreateExtension("foo", "");
+  scoped_refptr<extensions::Extension> extension =
+      CreateExtension("foo", std::string());
   extensions->extension_prefs()->AddGrantedPermissions(
-      extension->id(),
-      make_scoped_refptr(new extensions::PermissionSet));
+      extension->id(), make_scoped_refptr(new extensions::PermissionSet));
   extensions->AddExtension(extension);
   EXPECT_TRUE(
       GetCallbackResult(