Convert //extensions/browser from scoped_ptr to std::unique_ptr

extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h

Index: extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h
diff --git a/extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h b/extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h
index 4618d9f86fa9dd1f9cc68fee1553f90f3ca8d66e..ef91c244b33bf08eccfb87ecb89e03b41e43dcad 100644
--- a/extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h
+++ b/extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h
@@ -22,7 +22,7 @@ class MimeHandlerViewGuestDelegate;
 // MimeHandler to handle a resource stream.
 class StreamContainer {
  public:
-  StreamContainer(scoped_ptr<content::StreamInfo> stream,
+  StreamContainer(std::unique_ptr<content::StreamInfo> stream,
                   int tab_id,
                   bool embedded,
                   const GURL& handler_url,
@@ -41,7 +41,7 @@ class StreamContainer {
   std::string extension_id() const { return extension_id_; }
 
  private:
-  const scoped_ptr<content::StreamInfo> stream_;
+  const std::unique_ptr<content::StreamInfo> stream_;
   const bool embedded_;
   const int tab_id_;
   const GURL handler_url_;
@@ -94,8 +94,8 @@ class MimeHandlerViewGuest :
   std::string view_id() const { return view_id_; }
   base::WeakPtr<StreamContainer> GetStream() const;
 
-  scoped_ptr<MimeHandlerViewGuestDelegate> delegate_;
-  scoped_ptr<StreamContainer> stream_;
+  std::unique_ptr<MimeHandlerViewGuestDelegate> delegate_;
+  std::unique_ptr<StreamContainer> stream_;
   std::string view_id_;
 
   DISALLOW_COPY_AND_ASSIGN(MimeHandlerViewGuest);