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

chrome/test/base/tracing_browsertest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/test/base/tracing.h"
 
 #include "base/debug/trace_event.h"
 #include "base/message_loop.h"
 #include "base/run_loop.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
@@ skipping 14 matching lines @@
 const char* g_event = "TheEvent";
 
 class TracingBrowserTest : public InProcessBrowserTest {
  protected:
   // Execute some no-op javascript on the current tab - this triggers a trace
   // event in RenderViewImpl::OnScriptEvalRequest (from the renderer process).
   void ExecuteJavascriptOnCurrentTab() {
     content::RenderViewHost* rvh =
         chrome::GetActiveWebContents(browser())->GetRenderViewHost();
     ASSERT_TRUE(rvh);
-    ASSERT_TRUE(content::ExecuteJavaScript(rvh, L"", L";"));
+    ASSERT_TRUE(content::ExecuteJavaScript(rvh, "", ";"));
   }
 };
 
 void AddEvents(int num) {
   for (int i = 0; i < num; ++i)
     TRACE_EVENT_INSTANT0(g_category, g_event);
 }
 
 IN_PROC_BROWSER_TEST_F(TracingBrowserTest, BeginTracingWithWatch) {
   base::TimeDelta no_timeout;
@@ skipping 49 matching lines @@
       NEW_FOREGROUND_TAB, ui_test_utils::BROWSER_TEST_WAIT_FOR_NAVIGATION);
   ASSERT_NO_FATAL_FAILURE(ExecuteJavascriptOnCurrentTab());
   ui_test_utils::NavigateToURLWithDisposition(browser(), url2,
       NEW_FOREGROUND_TAB, ui_test_utils::BROWSER_TEST_WAIT_FOR_NAVIGATION);
   ASSERT_NO_FATAL_FAILURE(ExecuteJavascriptOnCurrentTab());
   EXPECT_TRUE(WaitForWatchEvent(no_timeout));
   ASSERT_TRUE(EndTracing(&json_events));
 }
 
 }  // namespace