Implement web speech synthesis.

content/common/tts_messages.h

Index: content/common/tts_messages.h
diff --git a/content/common/tts_messages.h b/content/common/tts_messages.h
new file mode 100644
index 0000000000000000000000000000000000000000..1433ac0d68853820f67bec7a28b6078b61f41c27
--- /dev/null
+++ b/content/common/tts_messages.h
@@ -0,0 +1,71 @@
+// Copyright (c) 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.
+
+// Multiply-included message file, hence no include guard.
+
+#include <vector>
+
+#include "content/public/common/tts_utterance_request.h"
+#include "ipc/ipc_message_macros.h"
+#include "ipc/ipc_param_traits.h"
+
+#define IPC_MESSAGE_START TtsMsgStart
+
+IPC_STRUCT_TRAITS_BEGIN(content::TtsUtteranceRequest)
+IPC_STRUCT_TRAITS_MEMBER(id)
+IPC_STRUCT_TRAITS_MEMBER(text)
+IPC_STRUCT_TRAITS_MEMBER(lang)
+IPC_STRUCT_TRAITS_MEMBER(voice)
+IPC_STRUCT_TRAITS_MEMBER(volume)
+IPC_STRUCT_TRAITS_MEMBER(rate)
+IPC_STRUCT_TRAITS_MEMBER(pitch)
+IPC_STRUCT_TRAITS_END()
+
+IPC_STRUCT_TRAITS_BEGIN(content::TtsVoice)
+IPC_STRUCT_TRAITS_MEMBER(voice_uri)
+IPC_STRUCT_TRAITS_MEMBER(name)
+IPC_STRUCT_TRAITS_MEMBER(lang)
+IPC_STRUCT_TRAITS_MEMBER(local_service)
+IPC_STRUCT_TRAITS_MEMBER(is_default)
+IPC_STRUCT_TRAITS_END()
+
+// Renderer -> Browser messages.
+
+IPC_MESSAGE_CONTROL1(TtsHostMsg_InitializeVoiceList,
+                     int /* routing_id */)
+IPC_MESSAGE_CONTROL2(TtsHostMsg_Speak,
+                     int, /* routing_id */
+                     content::TtsUtteranceRequest)
+IPC_MESSAGE_CONTROL0(TtsHostMsg_Pause)
+IPC_MESSAGE_CONTROL0(TtsHostMsg_Resume)
+IPC_MESSAGE_CONTROL0(TtsHostMsg_Cancel)
+
+// Browser -> Renderer messages.
+
+IPC_MESSAGE_ROUTED1(TtsMsg_SetVoiceList,
+                    std::vector<content::TtsVoice>)
+IPC_MESSAGE_ROUTED1(TtsMsg_DidStartSpeaking,
+                    int /* utterance id */)
+IPC_MESSAGE_ROUTED1(TtsMsg_DidFinishSpeaking,
+                    int /* utterance id */)
+IPC_MESSAGE_ROUTED1(TtsMsg_DidPauseSpeaking,
+                    int /* utterance id */)
+IPC_MESSAGE_ROUTED1(TtsMsg_DidResumeSpeaking,
+                    int /* utterance id */)
+IPC_MESSAGE_ROUTED2(TtsMsg_WordBoundary,
+                    int /* utterance id */,
+                    int /* char index */)
+IPC_MESSAGE_ROUTED2(TtsMsg_SentenceBoundary,
+                    int /* utterance id */,
+                    int /* char index */)
+IPC_MESSAGE_ROUTED2(TtsMsg_MarkerEvent,
+                    int /* utterance id */,
+                    int /* char index */)
+IPC_MESSAGE_ROUTED1(TtsMsg_WasInterrupted,
+                    int /* utterance id */)
+IPC_MESSAGE_ROUTED1(TtsMsg_WasCancelled,
+                    int /* utterance id */)
+IPC_MESSAGE_ROUTED2(TtsMsg_SpeakingErrorOccurred,
+                    int /* utterance id */,
+                    std::string /* error message */)