Add ExecuteJavaScriptForTest and make all tests use it

components/dom_distiller/content/browser/distiller_page_web_contents_browsertest.cc

 // Copyright 2013 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/memory/weak_ptr.h"
 #include "base/path_service.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "components/dom_distiller/content/browser/distiller_javascript_utils.h"
@@ skipping 486 matching lines @@
                                                true);
   web_contents->GetController().LoadURL(
       embedded_test_server()->GetURL("/pinch_tester.html"),
       content::Referrer(),
       ui::PAGE_TRANSITION_TYPED,
       std::string());
   url_loaded_runner.Run();
 
   // Execute the JS to run the tests, and wait until it has finished.
   base::RunLoop run_loop;
-  web_contents->GetMainFrame()->ExecuteJavaScript(
+  web_contents->GetMainFrame()->ExecuteJavaScriptForTests(
       base::UTF8ToUTF16("(function() {return pinchtest.run();})();"),
       base::Bind(&DistillerPageWebContentsTest::OnJsExecutionDone,
                  base::Unretained(this), run_loop.QuitClosure()));
   run_loop.Run();
 
   // Convert to dictionary and parse the results.
   const base::DictionaryValue* dict;
   ASSERT_TRUE(js_result_);
   ASSERT_TRUE(js_result_->GetAsDictionary(&dict));
 
   ASSERT_TRUE(dict->HasKey("success"));
   bool success;
   ASSERT_TRUE(dict->GetBoolean("success", &success));
   EXPECT_TRUE(success);
 }
 
 }  // namespace dom_distiller