Implement web speech synthesis.

chrome/renderer/chrome_content_renderer_client.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/renderer/chrome_content_renderer_client.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 52 matching lines @@
 #include "chrome/renderer/prerender/prerender_helper.h"
 #include "chrome/renderer/prerender/prerender_webmediaplayer.h"
 #include "chrome/renderer/prerender/prerenderer_client.h"
 #include "chrome/renderer/printing/print_web_view_helper.h"
 #include "chrome/renderer/safe_browsing/malware_dom_details.h"
 #include "chrome/renderer/safe_browsing/phishing_classifier_delegate.h"
 #include "chrome/renderer/searchbox/searchbox.h"
 #include "chrome/renderer/searchbox/searchbox_extension.h"
 #include "chrome/renderer/spellchecker/spellcheck.h"
 #include "chrome/renderer/spellchecker/spellcheck_provider.h"
+#include "chrome/renderer/tts_dispatcher.h"
 #include "components/autofill/renderer/autofill_agent.h"
 #include "components/autofill/renderer/password_autofill_agent.h"
 #include "components/autofill/renderer/password_generation_manager.h"
 #include "components/visitedlink/renderer/visitedlink_slave.h"
 #include "content/public/common/content_constants.h"
 #include "content/public/renderer/render_thread.h"
 #include "content/public/renderer/render_view.h"
 #include "content/public/renderer/render_view_visitor.h"
 #include "extensions/common/constants.h"
 #include "grit/generated_resources.h"
@@ skipping 1062 matching lines @@
       IsOtherExtensionWithWebRequestInstalled();
 }
 
 void ChromeContentRendererClient::RegisterPPAPIInterfaceFactories(
     webkit::ppapi::PpapiInterfaceFactoryManager* factory_manager) {
 #if defined(ENABLE_PLUGINS)
   factory_manager->RegisterFactory(ChromePPAPIInterfaceFactory);
 #endif
 }
 
+WebKit::WebSpeechSynthesizer*
+ChromeContentRendererClient::OverrideSpeechSynthesizer(
+    WebKit::WebSpeechSynthesizerClient* client) {
+  return new TtsDispatcher(client);
+}
+
 bool ChromeContentRendererClient::AllowBrowserPlugin(
     WebKit::WebPluginContainer* container) const {
   if (CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableBrowserPluginForAllViewTypes))
     return true;
 
   // If this |BrowserPlugin| <object> in the |container| is not inside a
   // <webview>/<adview> shadowHost, we disable instantiating this plugin. This
   // is to discourage and prevent developers from accidentally attaching
   // <object> directly in apps.
   //
   // Note that this check below does *not* ensure any security, it is still
   // possible to bypass this check.
   // TODO(lazyboy): http://crbug.com/178663, Ensure we properly disallow
   // instantiating BrowserPlugin outside of the <webview>/<adview> shim.
   if (container->element().isNull())
     return false;
 
   if (container->element().shadowHost().isNull())
     return false;
 
   WebString tag_name = container->element().shadowHost().tagName();
   return tag_name.equals(WebString::fromUTF8(kWebViewTagName)) ||
     tag_name.equals(WebString::fromUTF8(kAdViewTagName));
 }
 
 }  // namespace chrome