Add ExecuteJavaScriptForTest and make all tests use it

chrome/browser/mouseleave_browsertest.cc

Index: chrome/browser/mouseleave_browsertest.cc
diff --git a/chrome/browser/mouseleave_browsertest.cc b/chrome/browser/mouseleave_browsertest.cc
index c4bcbcf450b7adfa431e017cdcb9f1256c18e822..6719b9394d356debca9bf729e14055af6450ef6d 100644
--- a/chrome/browser/mouseleave_browsertest.cc
+++ b/chrome/browser/mouseleave_browsertest.cc
@@ -130,7 +130,7 @@ IN_PROC_BROWSER_TEST_F(MouseLeaveTest, MAYBE_ContextMenu) {
   // Wait until the context menu is opened and closed.
   menu_observer.WaitForMenuOpenAndClose();
 
-  tab->GetMainFrame()->ExecuteJavaScript(base::ASCIIToUTF16("done()"));
+  tab->GetMainFrame()->ExecuteJavaScriptForTests(base::ASCIIToUTF16("done()"));
   const base::string16 success_title = base::ASCIIToUTF16("without mouseleave");
   const base::string16 failure_title = base::ASCIIToUTF16("with mouseleave");
   content::TitleWatcher done_title_watcher(tab, success_title);
@@ -156,12 +156,12 @@ IN_PROC_BROWSER_TEST_F(MouseLeaveTest, MAYBE_ModalDialog) {
 
   EXPECT_NO_FATAL_FAILURE(LoadTestPageAndWaitForMouseOver(tab));
 
-  tab->GetMainFrame()->ExecuteJavaScript(base::UTF8ToUTF16("alert()"));
+  tab->GetMainFrame()->ExecuteJavaScriptForTests(base::UTF8ToUTF16("alert()"));
   app_modal::AppModalDialog* alert = ui_test_utils::WaitForAppModalDialog();
   // Cancel the dialog.
   alert->CloseModalDialog();
 
-  tab->GetMainFrame()->ExecuteJavaScript(base::ASCIIToUTF16("done()"));
+  tab->GetMainFrame()->ExecuteJavaScriptForTests(base::ASCIIToUTF16("done()"));
   const base::string16 success_title = base::ASCIIToUTF16("without mouseleave");
   const base::string16 failure_title = base::ASCIIToUTF16("with mouseleave");
   content::TitleWatcher done_title_watcher(tab, success_title);