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

content/browser/session_history_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 "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/web_contents.h"
@@ skipping 413 matching lines @@
 
   GoBack();
   EXPECT_EQ("Default Title", GetTabTitle());
 }
 
 // http://code.google.com/p/chromium/issues/detail?id=56267
 IN_PROC_BROWSER_TEST_F(SessionHistoryTest, HistoryLength) {
   int length;
   ASSERT_TRUE(ExecuteJavaScriptAndExtractInt(
       shell()->web_contents()->GetRenderViewHost(),
-      L"", L"domAutomationController.send(history.length)", &length));
+      "",
+      "domAutomationController.send(history.length)",
+      &length));
   EXPECT_EQ(1, length);
 
   NavigateToURL(shell(), GetURL("title1.html"));
 
   ASSERT_TRUE(ExecuteJavaScriptAndExtractInt(
       shell()->web_contents()->GetRenderViewHost(),
-      L"", L"domAutomationController.send(history.length)", &length));
+      "",
+      "domAutomationController.send(history.length)",
+      &length));
   EXPECT_EQ(2, length);
 
   // Now test that history.length is updated when the navigation is committed.
   NavigateToURL(shell(), GetURL("record_length.html"));
 
   ASSERT_TRUE(ExecuteJavaScriptAndExtractInt(
       shell()->web_contents()->GetRenderViewHost(),
-      L"", L"domAutomationController.send(history.length)", &length));
+      "",
+      "domAutomationController.send(history.length)",
+      &length));
   EXPECT_EQ(3, length);
 
   GoBack();
   GoBack();
 
   // Ensure history.length is properly truncated.
   NavigateToURL(shell(), GetURL("title2.html"));
 
   ASSERT_TRUE(ExecuteJavaScriptAndExtractInt(
       shell()->web_contents()->GetRenderViewHost(),
-      L"", L"domAutomationController.send(history.length)", &length));
+      "",
+      "domAutomationController.send(history.length)",
+      &length));
   EXPECT_EQ(2, length);
 }
 
 }  // namespace content