Change ExecuteJavaScript* helper functions in browser_test_utils.{h,cc}

chrome/browser/content_settings/content_settings_browsertest.cc

Index: chrome/browser/content_settings/content_settings_browsertest.cc
diff --git a/chrome/browser/content_settings/content_settings_browsertest.cc b/chrome/browser/content_settings/content_settings_browsertest.cc
index 013cc3972b86d343ae4daa7b39815dfa9c3aa09d..c2ff3e27ad893d2dd8ac1ce0cecebb0d12426090 100644
--- a/chrome/browser/content_settings/content_settings_browsertest.cc
+++ b/chrome/browser/content_settings/content_settings_browsertest.cc
@@ -381,7 +381,8 @@ IN_PROC_BROWSER_TEST_F(ClickToPlayPluginTest, LoadAllBlockedPlugins) {
 
   ASSERT_TRUE(content::ExecuteJavaScript(
       chrome::GetActiveWebContents(browser())->GetRenderViewHost(),
-      L"", L"window.inject()"));
+      "",
+      "window.inject()"));
 
   EXPECT_EQ(expected_title2, title_watcher2.WaitAndGetTitle());
 }
@@ -397,7 +398,8 @@ IN_PROC_BROWSER_TEST_F(ClickToPlayPluginTest, NoCallbackAtLoad) {
   // Inject the callback function into the HTML page generated by the browser.
   ASSERT_TRUE(content::ExecuteJavaScript(
       chrome::GetActiveWebContents(browser())->GetRenderViewHost(),
-      L"", L"CallOnStartup = function() { document.title = \"OK\"; }"));
+      "",
+      "CallOnStartup = function() { document.title = \"OK\"; }"));
 
   string16 expected_title(ASCIIToUTF16("OK"));
   content::TitleWatcher title_watcher(