Implement web speech synthesis.

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index 1a47b406d80c72c66491c8ae0043b31e5ffb4396..3df90e9fb59e41a1cf2a768b4d62f7db738f4321 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -64,6 +64,7 @@
 #include "chrome/browser/renderer_host/pepper/chrome_browser_pepper_host_factory.h"
 #include "chrome/browser/search_engines/search_provider_install_state_message_filter.h"
 #include "chrome/browser/speech/chrome_speech_recognition_manager_delegate.h"
+#include "chrome/browser/speech/tts_request_handler.h"
 #include "chrome/browser/spellchecker/spellcheck_message_filter.h"
 #include "chrome/browser/ssl/ssl_add_certificate.h"
 #include "chrome/browser/ssl/ssl_blocking_page.h"
@@ -1675,6 +1676,11 @@ content::SpeechRecognitionManagerDelegate*
 #endif
 }
 
+content::TtsDispatcherHostDelegate*
+ChromeContentBrowserClient::GetTtsDispatcherHostDelegate() {
+  return new TtsRequestHandler();

[tommi (sloooow) - chröme, 2013/03/07 13:04:46]

it would be great to start using scoped_ptr's support for passing ownership in
these methods.  Also, I would personally prefer to use the "Create" prefix
instead of "Get".  Can we change the method like so?

scoped_ptr<content::TtsDispatcherHostDelegate>
ChromeContentBrowserClient::CreateTtsDispatcherHostDelegate()

Imho GetSpeechRecognitionManagerDelegate should be renamed as well, so please
add a todo for me to fix it.  GetNetLog() and CreateAccessTokenStore() below are
appropriately named at least as far as Get vs Create goes.

[dmazzoni, 2013/03/19 17:30:22]

Cool - done, and added the TODO for you.

+}
+
 net::NetLog* ChromeContentBrowserClient::GetNetLog() {
   return g_browser_process->net_log();
 }