Add Blink side support for SourceBuffer.appendWindowStart & SourceBuffer.appendWindowEnd.

public/web/WebSourceBuffer.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef WebSourceBuffer_h
 #define WebSourceBuffer_h
 
 #include "WebTimeRange.h"

[jamesr, 2013/08/09 21:03:14]

is this include used?

[changbin, 2013/08/09 23:00:32]

Yes. "virtual WebTimeRanges buffered() = 0;"

 
 namespace WebKit {
 
 class WebSourceBuffer {
 public:
     virtual ~WebSourceBuffer() { }
 
     virtual WebTimeRanges buffered() = 0;
     virtual void append(const unsigned char* data, unsigned length) = 0;
     virtual void abort() = 0;
     virtual void remove(double start, double end) = 0;
     virtual bool setTimestampOffset(double) = 0;
+    virtual void setAppendWindowStart(double) = 0;

[jamesr, 2013/08/09 21:03:14]

the meaning of the parameter on these functions are not clear from the type. are
these timestamps? please clarify with either a parameter name or a comment

[changbin, 2013/08/09 23:00:32]

Done.

+    virtual void setAppendWindowEnd(double) = 0;
     virtual void removedFromMediaSource() = 0;
 };
 
 } // namespace WebKit
 
 #endif