Move code that doesn't depend on PPAPI out of remoting/client/plugin

remoting/client/empty_cursor_filter.h

-// Copyright 2014 The Chromium Authors. All rights reserved.
+// Copyright 2015 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_CLIENT_PLUGIN_EMPTY_CURSOR_FILTER_H_
-#define REMOTING_CLIENT_PLUGIN_EMPTY_CURSOR_FILTER_H_
+#ifndef REMOTING_CLIENT_EMPTY_CURSOR_FILTER_H_
+#define REMOTING_CLIENT_EMPTY_CURSOR_FILTER_H_
 
 #include "remoting/protocol/cursor_shape_stub.h"
 
 namespace remoting {
 
 // Returns an empty cursor.
 protocol::CursorShapeInfo EmptyCursorShape();
 
 // Returns true of the supplied cursor is empty, i.e. width and/or height <= 0.
 bool IsCursorShapeEmpty(const protocol::CursorShapeInfo& cursor_shape);
@@ skipping 16 matching lines @@
   }
 
  private:
   protocol::CursorShapeStub* cursor_stub_;
 
   DISALLOW_COPY_AND_ASSIGN(EmptyCursorFilter);
 };
 
 }  // namespace remoting
 
-#endif  // REMOTING_CLIENT_PLUGIN_EMPTY_CURSOR_FILTER_H_
+#endif  // REMOTING_CLIENT_EMPTY_CURSOR_FILTER_H_