Revert of Disable speech synthesis API for content/ layer.

content/shell/browser/shell_content_browser_client.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 "content/shell/browser/shell_content_browser_client.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/files/file.h"
@@ skipping 219 matching lines @@
   if (CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableLeakDetection))
     command_line->AppendSwitch(switches::kEnableLeakDetection);
   if (CommandLine::ForCurrentProcess()->HasSwitch(
         switches::kRegisterFontFiles)) {
     command_line->AppendSwitchASCII(
         switches::kRegisterFontFiles,
         CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
             switches::kRegisterFontFiles));
   }
-
-  // Speech Synthesis backend lives in chrome/. See crbug.com/347045
-  // tracking moving it to content/.
-  command_line->AppendSwitch(switches::kDisableSpeechSynthesis);
 }
 
 void ShellContentBrowserClient::OverrideWebkitPrefs(
     RenderViewHost* render_view_host,
     const GURL& url,
     WebPreferences* prefs) {
   if (!CommandLine::ForCurrentProcess()->HasSwitch(switches::kDumpRenderTree))
     return;
   WebKitTestController::Get()->OverrideWebkitPrefs(prefs);
 }
@@ skipping 114 matching lines @@
 ShellBrowserContext*
 ShellContentBrowserClient::ShellBrowserContextForBrowserContext(
     BrowserContext* content_browser_context) {
   if (content_browser_context == browser_context())
     return browser_context();
   DCHECK_EQ(content_browser_context, off_the_record_browser_context());
   return off_the_record_browser_context();
 }
 
 }  // namespace content