Move code in src/remoting to the new callbacks.

remoting/host/capturer_fake_ascii.cc

Index: remoting/host/capturer_fake_ascii.cc
diff --git a/remoting/host/capturer_fake_ascii.cc b/remoting/host/capturer_fake_ascii.cc
index f2bb5d201c63aee379472d21fb5a9e89b4026bd3..e0f584563c865f062b5608e5c33bcb751465bebc 100644
--- a/remoting/host/capturer_fake_ascii.cc
+++ b/remoting/host/capturer_fake_ascii.cc
@@ -52,9 +52,7 @@ void CapturerFakeAscii::InvalidateFullScreen() {
 }
 
 void CapturerFakeAscii::CaptureInvalidRegion(
-    CaptureCompletedCallback* callback) {
-  scoped_ptr<CaptureCompletedCallback> callback_deleter(callback);
-
+    const CaptureCompletedCallback& callback) {
   GenerateImage();
   DataPlanes planes;
   planes.data[0] = buffers_[current_buffer_].get();
@@ -65,7 +63,7 @@ void CapturerFakeAscii::CaptureInvalidRegion(
 
   helper_.set_size_most_recent(capture_data->size());
 
-  callback->Run(capture_data);
+  callback.Run(capture_data);
 }
 
 const SkISize& CapturerFakeAscii::size_most_recent() const {