Add ExecuteJavaScriptForTest and make all tests use it

components/dom_distiller/content/browser/test/dom_distiller_js_browsertest.cc

 // Copyright 2015 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/callback.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
@@ skipping 103 matching lines @@
       std::string());
   url_loaded_runner.Run();
 
   // Execute the JS to run the tests, and wait until it has finished.
   base::RunLoop run_loop;
   js_test_execution_done_callback_ = run_loop.QuitClosure();
   // Add timeout in case JS Test execution fails. It is safe to call the
   // QuitClosure multiple times.
   base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
       FROM_HERE, run_loop.QuitClosure(), base::TimeDelta::FromSeconds(15));
-  web_contents->GetMainFrame()->ExecuteJavaScript(
+  web_contents->GetMainFrame()->ExecuteJavaScriptForTests(
       base::UTF8ToUTF16(kRunJsTestsJs),
       base::Bind(&DomDistillerJsTest::OnJsTestExecutionDone,
                  base::Unretained(this)));
   run_loop.Run();
 
   // By now either the timeout has triggered, or there should be a result.
   ASSERT_TRUE(result_ != NULL) << "No result found. Timeout?";
 
   // Convert to dictionary and parse the results.
   const base::DictionaryValue* dict;
@@ skipping 24 matching lines @@
   // Only print the log if there was an error.
   if (!success) {
     ASSERT_TRUE(dict->HasKey("log"));
     std::string console_log;
     ASSERT_TRUE(dict->GetString("log", &console_log));
     VLOG(0) << "Console log:\n" << console_log;
   }
 }
 
 }  // namespace dom_distiller