Implement web speech synthesis.

content/public/browser/content_browser_client.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 #define CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 
 #include <map>
 #include <string>
 #include <utility>
@@ skipping 60 matching lines @@
 class BrowserPpapiHost;
 class BrowserURLHandler;
 class MediaObserver;
 class QuotaPermissionContext;
 class RenderProcessHost;
 class RenderViewHost;
 class RenderViewHostDelegateView;
 class ResourceContext;
 class SiteInstance;
 class SpeechRecognitionManagerDelegate;
+class TtsDispatcherHostDelegate;
 class WebContents;
 class WebContentsViewDelegate;
 class WebContentsViewPort;
 struct MainFunctionParams;
 struct ShowDesktopNotificationHostMsgParams;
 
 // A mapping from the scheme name to the protocol handler that services its
 // content.
 typedef std::map<
   std::string, linked_ptr<net::URLRequestJobFactory::ProtocolHandler> >
@@ skipping 326 matching lines @@
 
   // Notifies the embedder that the ResourceDispatcherHost has been created.
   // This is when it can optionally add a delegate.
   virtual void ResourceDispatcherHostCreated() {}
 
   // Allows the embedder to return a delegate for the SpeechRecognitionManager.
   // The delegate will be owned by the manager. It's valid to return NULL.
   virtual SpeechRecognitionManagerDelegate*
       GetSpeechRecognitionManagerDelegate();
 
+  // Allows the embedder to return a delegate for the TtsDispatcherHost.
+  // The delegate will be owned by the dispatcher. It's valid to return NULL.
+  virtual TtsDispatcherHostDelegate* GetTtsDispatcherHostDelegate();
+
   // Getters for common objects.
   virtual net::NetLog* GetNetLog();
 
   // Creates a new AccessTokenStore for gelocation.
   virtual AccessTokenStore* CreateAccessTokenStore();
 
   // Returns true if fast shutdown is possible.
   virtual bool IsFastShutdownPossible();
 
   // Called by WebContents to override the WebKit preferences that are used by
@@ skipping 70 matching lines @@
   // This is called on a worker thread.
   virtual
       crypto::CryptoModuleBlockingPasswordDelegate* GetCryptoPasswordDelegate(
           const GURL& url);
 #endif
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_