Replace MediaStreamUIController with MediaStreamUIProxy.

chrome/browser/media/media_capture_devices_dispatcher.h

Index: chrome/browser/media/media_capture_devices_dispatcher.h
diff --git a/chrome/browser/media/media_capture_devices_dispatcher.h b/chrome/browser/media/media_capture_devices_dispatcher.h
index c9fb31c77f05be7d0474058679858595b685ef18..5691b18f2f04d9778e5b090e64beead70e498cba 100644
--- a/chrome/browser/media/media_capture_devices_dispatcher.h
+++ b/chrome/browser/media/media_capture_devices_dispatcher.h
@@ -5,11 +5,15 @@
 #ifndef CHROME_BROWSER_MEDIA_MEDIA_CAPTURE_DEVICES_DISPATCHER_H_
 #define CHROME_BROWSER_MEDIA_MEDIA_CAPTURE_DEVICES_DISPATCHER_H_
 
+#include <queue>
+
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/singleton.h"
 #include "base/observer_list.h"
 #include "content/public/browser/media_observer.h"
+#include "content/public/browser/notification_observer.h"
+#include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "content/public/common/media_stream_request.h"
 
@@ -27,7 +31,8 @@ class PrefRegistrySyncable;
 
 // This singleton is used to receive updates about media events from the content
 // layer.
-class MediaCaptureDevicesDispatcher : public content::MediaObserver {
+class MediaCaptureDevicesDispatcher : public content::MediaObserver,
+                                      public content::NotificationObserver {
  public:
   class Observer {
    public:
@@ -114,9 +119,24 @@ class MediaCaptureDevicesDispatcher : public content::MediaObserver {
  private:
   friend struct DefaultSingletonTraits<MediaCaptureDevicesDispatcher>;
 
+  struct PendingAccessRequest {
+    PendingAccessRequest(const content::MediaStreamRequest& request,
+                         const content::MediaResponseCallback& callback);
+    ~PendingAccessRequest();
+
+    content::MediaStreamRequest request;
+    content::MediaResponseCallback callback;
+  };
+  typedef std::queue<PendingAccessRequest> RequestsQueue;
+
   MediaCaptureDevicesDispatcher();
   virtual ~MediaCaptureDevicesDispatcher();
 
+  // content::NotificationObserver implementation.
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details) OVERRIDE;
+
   // Helpers for ProcessMediaAccessRequest().
   void ProcessScreenCaptureAccessRequest(
       content::WebContents* web_contents,
@@ -127,6 +147,14 @@ class MediaCaptureDevicesDispatcher : public content::MediaObserver {
       const content::MediaStreamRequest& request,
       const content::MediaResponseCallback& callback,
       const extensions::Extension* extension);
+  void ProcessRegularMediaAccessRequest(
+      content::WebContents* web_contents,
+      const content::MediaStreamRequest& request,
+      const content::MediaResponseCallback& callback);
+  void ProcessQueuedAccessRequest(content::WebContents* web_contents);
+  void OnAccessRequestResponse(content::WebContents* web_contents,
+                               const content::MediaStreamDevices& devices,
+                               scoped_ptr<content::MediaStreamUI> ui);
 
   // Called by the MediaObserver() functions, executed on UI thread.
   void UpdateAudioDevicesOnUIThread(const content::MediaStreamDevices& devices);
@@ -150,9 +178,15 @@ class MediaCaptureDevicesDispatcher : public content::MediaObserver {
   // Only accessed on UI thread.
   bool devices_enumerated_;
 
+  std::map<content::WebContents*, RequestsQueue> pending_requests_;
+
   scoped_refptr<MediaStreamCaptureIndicator> media_stream_capture_indicator_;
 
   scoped_refptr<AudioStreamIndicator> audio_stream_indicator_;
+
+  content::NotificationRegistrar notifications_registrar_;
+
+  DISALLOW_COPY_AND_ASSIGN(MediaCaptureDevicesDispatcher);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_MEDIA_CAPTURE_DEVICES_DISPATCHER_H_