Introduce RenderView::Observer interface so that RenderView doesn't have to k...

chrome/renderer/speech_input_dispatcher.cc

 // 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.
 
 #include "chrome/renderer/speech_input_dispatcher.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/renderer/render_view.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebFrame.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebSpeechInputListener.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebSize.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebString.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebView.h"
 
 using WebKit::WebFrame;
 
 SpeechInputDispatcher::SpeechInputDispatcher(
-    RenderView* render_view, WebKit::WebSpeechInputListener* listener)
-    : render_view_(render_view),
+    RenderView* render_view,
+    WebKit::WebSpeechInputListener* listener)
+    : RenderViewObserver(render_view),
       listener_(listener) {
 }
 
 bool SpeechInputDispatcher::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(SpeechInputDispatcher, message)
     IPC_MESSAGE_HANDLER(ViewMsg_SpeechInput_SetRecognitionResult,
                         OnSpeechRecognitionResult)
     IPC_MESSAGE_HANDLER(ViewMsg_SpeechInput_RecordingComplete,
                         OnSpeechRecordingComplete)
     IPC_MESSAGE_HANDLER(ViewMsg_SpeechInput_RecognitionComplete,
                         OnSpeechRecognitionComplete)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 bool SpeechInputDispatcher::startRecognition(
     int request_id,
     const WebKit::WebRect& element_rect,
     const WebKit::WebString& language,
     const WebKit::WebString& grammar) {
   VLOG(1) << "SpeechInputDispatcher::startRecognition enter";
-  gfx::Size scroll = render_view_->webview()->mainFrame()->scrollOffset();
+  gfx::Size scroll = render_view()->webview()->mainFrame()->scrollOffset();
   gfx::Rect rect = element_rect;
   rect.Offset(-scroll.width(), -scroll.height());
-  render_view_->Send(new ViewHostMsg_SpeechInput_StartRecognition(
-      render_view_->routing_id(), request_id, rect,
+  Send(new ViewHostMsg_SpeechInput_StartRecognition(
+      routing_id(), request_id, rect,
       UTF16ToUTF8(language), UTF16ToUTF8(grammar)));
   VLOG(1) << "SpeechInputDispatcher::startRecognition exit";
   return true;
 }
 
 void SpeechInputDispatcher::cancelRecognition(int request_id) {
   VLOG(1) << "SpeechInputDispatcher::cancelRecognition enter";
-  render_view_->Send(new ViewHostMsg_SpeechInput_CancelRecognition(
-      render_view_->routing_id(), request_id));
+  Send(new ViewHostMsg_SpeechInput_CancelRecognition(routing_id(), request_id));
   VLOG(1) << "SpeechInputDispatcher::cancelRecognition exit";
 }
 
 void SpeechInputDispatcher::stopRecording(int request_id) {
   VLOG(1) << "SpeechInputDispatcher::stopRecording enter";
-  render_view_->Send(new ViewHostMsg_SpeechInput_StopRecording(
-      render_view_->routing_id(), request_id));
+  Send(new ViewHostMsg_SpeechInput_StopRecording(routing_id(), request_id));
   VLOG(1) << "SpeechInputDispatcher::stopRecording exit";
 }
 
 void SpeechInputDispatcher::OnSpeechRecognitionResult(
     int request_id, const speech_input::SpeechInputResultArray& result) {
   VLOG(1) << "SpeechInputDispatcher::OnSpeechRecognitionResult enter";
   WebKit::WebSpeechInputResultArray webkit_result(result.size());
   for (size_t i = 0; i < result.size(); ++i)
     webkit_result[i].set(result[i].utterance, result[i].confidence);
   listener_->setRecognitionResult(request_id, webkit_result);
   VLOG(1) << "SpeechInputDispatcher::OnSpeechRecognitionResult exit";
 }
 
 void SpeechInputDispatcher::OnSpeechRecordingComplete(int request_id) {
   VLOG(1) << "SpeechInputDispatcher::OnSpeechRecordingComplete enter";
   listener_->didCompleteRecording(request_id);
   VLOG(1) << "SpeechInputDispatcher::OnSpeechRecordingComplete exit";
 }
 
 void SpeechInputDispatcher::OnSpeechRecognitionComplete(int request_id) {
   VLOG(1) << "SpeechInputDispatcher::OnSpeechRecognitionComplete enter";
   listener_->didCompleteRecognition(request_id);
   VLOG(1) << "SpeechInputDispatcher::OnSpeechRecognitionComplete exit";
 }