Move screen capturers to remoting/capturer.

remoting/capturer/differ.h

Index: remoting/capturer/differ.h
diff --git a/remoting/host/differ.h b/remoting/capturer/differ.h
similarity index 90%
rename from remoting/host/differ.h
rename to remoting/capturer/differ.h
index c46f57a4357e9f7f15867e4cb805f26c46474a26..469384c470e2b90300400e2a805093d08ae2435f 100644
--- a/remoting/host/differ.h
+++ b/remoting/capturer/differ.h
@@ -1,9 +1,9 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 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.
 
-#ifndef REMOTING_HOST_DIFFER_H_
-#define REMOTING_HOST_DIFFER_H_
+#ifndef REMOTING_CAPTURER_DIFFER_H_
+#define REMOTING_CAPTURER_DIFFER_H_
 
 #include <vector>
 
@@ -19,6 +19,8 @@ typedef uint8 DiffInfo;
 // diff_info_ should no longer be needed, as we can put our data directly into
 // the region that we are calculating.
 // http://crbug.com/92379
+// TODO(sergeyu): Rename this class to something more sensible, e.g.
+// VideoFrameDifferencer.
 class Differ {
  public:
   // Create a differ that operates on bitmaps with the specified width, height
@@ -79,4 +81,4 @@ class Differ {
 
 }  // namespace remoting
 
-#endif  // REMOTING_HOST_DIFFER_H_
+#endif  // REMOTING_CAPTURER_DIFFER_H_