Make SpeechRecognition per RenderFrame instead of per RenderView.

content/renderer/speech_recognition_dispatcher.h

Index: content/renderer/speech_recognition_dispatcher.h
diff --git a/content/renderer/speech_recognition_dispatcher.h b/content/renderer/speech_recognition_dispatcher.h
index 10241956e8142013e10bdd42b48696e61f484cf5..e7e02c25c5c137746692dc8eaccd9c32bc686ccb 100644
--- a/content/renderer/speech_recognition_dispatcher.h
+++ b/content/renderer/speech_recognition_dispatcher.h
@@ -12,7 +12,7 @@
 #include "base/memory/shared_memory.h"
 #include "base/sync_socket.h"
 #include "content/public/common/speech_recognition_result.h"
-#include "content/public/renderer/render_view_observer.h"
+#include "content/public/renderer/render_frame_observer.h"
 #include "third_party/WebKit/public/platform/WebMediaStreamTrack.h"
 #include "third_party/WebKit/public/platform/WebVector.h"
 #include "third_party/WebKit/public/web/WebSpeechRecognitionHandle.h"
@@ -23,7 +23,6 @@ class AudioParameters;
 }
 
 namespace content {
-class RenderViewImpl;
 #if defined(ENABLE_WEBRTC)
 class SpeechRecognitionAudioSink;
 #endif
@@ -32,19 +31,17 @@ struct SpeechRecognitionResult;
 
 // SpeechRecognitionDispatcher is a delegate for methods used by WebKit for
 // scripted JS speech APIs. It's the complement of
-// SpeechRecognitionDispatcherHost (owned by RenderViewHost).
-class SpeechRecognitionDispatcher : public RenderViewObserver,
+// SpeechRecognitionDispatcherHost (owned by RenderFrameHost).
+class SpeechRecognitionDispatcher : public RenderFrameObserver,
                                     public blink::WebSpeechRecognizer {
  public:
-  explicit SpeechRecognitionDispatcher(RenderViewImpl* render_view);
+  explicit SpeechRecognitionDispatcher(RenderFrame* render_frame);
   virtual ~SpeechRecognitionDispatcher();
 
-  // Aborts all speech recognitions.
-  void AbortAllRecognitions();
-
  private:
-  // RenderViewObserver implementation.
+  // RenderFrameObserver implementation.
   bool OnMessageReceived(const IPC::Message& message) override;
+  void WasHidden() override;
 
   // blink::WebSpeechRecognizer implementation.
   virtual void start(const blink::WebSpeechRecognitionHandle&,