Adds chromium side plumbing to pass speech input calls back and forth with WebKit.

chrome/common/render_messages_internal.h

 // Copyright (c) 2010 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.
 
 // This header is meant to be included in multiple passes, hence no traditional
 // header guard.
 // See ipc_message_macros.h for explanation of the macros and passes.
 
 #include <map>
 #include <string>
@@ skipping 958 matching lines @@
 
   // Relay a request from assistive technology to set focus to a given node.
   IPC_MESSAGE_ROUTED1(ViewMsg_SetAccessibilityFocus,
                       int /* object id */)
 
   // Relay a request from assistive technology to perform the default action
   // on a given node.
   IPC_MESSAGE_ROUTED1(ViewMsg_AccessibilityDoDefaultAction,
                       int /* object id */)
 
+  // Relay a speech recognition result, either partial or final.
+  IPC_MESSAGE_ROUTED1(ViewMsg_SpeechInput_SetRecognitionResult,
+                      string16 /* result */)
+
+  // Indicate that speech recognizer has stopped recording and started
+  // recognition.
+  IPC_MESSAGE_ROUTED0(ViewMsg_SpeechInput_RecordingComplete)
+
+  // Indicate that speech recognizer has completed recognition. This will be
+  // the last message sent in response to a
+  // ViewHostMsg_SpeechInput_StartRecognition.
+  IPC_MESSAGE_ROUTED0(ViewMsg_SpeechInput_RecognitionComplete)
+
 IPC_END_MESSAGES(View)
 
 
 //-----------------------------------------------------------------------------
 // TabContents messages
 // These are messages sent from the renderer to the browser process.
 
 IPC_BEGIN_MESSAGES(ViewHost)
   // Sent by the renderer when it is creating a new window.  The browser creates
   // a tab for it and responds with a ViewMsg_CreatingNew_ACK.  If route_id is
@@ skipping 1539 matching lines @@
 
   // Send the tree of accessibility data to the browser, where it's cached
   // in order to respond to OS accessibility queries immediately.
   IPC_MESSAGE_ROUTED1(ViewHostMsg_AccessibilityTree,
                       webkit_glue::WebAccessibility)
 
   // Notifies the TabContents that the content being displayed is PDF.
   // This allows the browser to handle things such as zooming differently.
   IPC_MESSAGE_ROUTED0(ViewHostMsg_SetDisplayingPDFContent)
 
+  // Requests the speech input service to start speech recognition on behalf of
+  // the given |render_view_id|.
+  IPC_MESSAGE_CONTROL1(ViewHostMsg_SpeechInput_StartRecognition,
+                       int /* render_view_id */)
+
+  // Requests the speech input service to cancel speech recognition on behalf of
+  // the given |render_view_id|. If speech recognition is not happening nor or
+  // is happening on behalf of some other render view, this call does nothing.
+  IPC_MESSAGE_CONTROL1(ViewHostMsg_SpeechInput_CancelRecognition,
+                       int /* render_view_id */)
+
+  // Requests the speech input service to stop audio recording on behalf of
+  // the given |render_view_id|. Any audio recorded so far will be fed to the
+  // speech recognizer. If speech recognition is not happening nor or is
+  // happening on behalf of some other render view, this call does nothing.
+  IPC_MESSAGE_CONTROL1(ViewHostMsg_SpeechInput_StopRecording,
+                       int /* render_view_id */)
+
 IPC_END_MESSAGES(ViewHost)