Wrote gmock-based mock filters and a mock filter factory.

media/base/filters.h

 // Copyright (c) 2006-2009 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.
 
 // Filters are connected in a strongly typed manner, with downstream filters
 // always reading data from upstream filters.  Upstream filters have no clue
 // who is actually reading from them, and return the results via callbacks.
 //
 //                         DemuxerStream(Video) <- VideoDecoder <- VideoRenderer
 // DataSource <- Demuxer <
@@ skipping 227 matching lines @@
 
   // Initializes this filter, returns true if successful, false otherwise.
   virtual bool Initialize(DemuxerStream* demuxer_stream) = 0;
 
   // Returns the MediaFormat for this filter.
   virtual const MediaFormat& media_format() = 0;
 
   // Schedules a read.  Decoder takes ownership of the callback.
   //
   // TODO(scherkus): switch Read() callback to scoped_refptr<>.
-  virtual void Read(Callback1<Buffer*>::Type* read_callbasck) = 0;
+  virtual void Read(Callback1<Buffer*>::Type* read_callback) = 0;
 };
 
 
 class VideoRenderer : public MediaFilter {
  public:
   static const FilterType filter_type() {
     return FILTER_VIDEO_RENDERER;
   }
 
   static const char* major_mime_type() {
@@ skipping 18 matching lines @@
   // Initializes this filter, returns true if successful, false otherwise.
   virtual bool Initialize(AudioDecoder* decoder) = 0;
 
   // Sets the output volume.
   virtual void SetVolume(float volume) = 0;
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_FILTERS_H_