Bug 939655 - Remove LOG macro definition from MediaStreamGraphImpl.h - r=roc
Removing this reduces opportunity for macro name clashes and using
the wrong log object if this header file is included out of order
in a .cpp file.

--HG--
rename : browser/themes/linux/Toolbar-inverted.png => browser/themes/windows/Toolbar-inverted.png
extra : rebase_source : 053384512e0f3a70d07ebe9ca0a07dc0f39d9b5b
Bug 939716 - Destructor for MediaStreamGraph should be virtual - r=roc
The destructor for MediaStreamGraph is non-virtual but it has a
derived class, MediaStreamGraphImpl, that overrides the destructor.
This destructor won't be called if an instance is deleted using a
pointer type of MediaStreamGraph.

It's unclear whether this actually happens but MediaStreamGraph.cpp
has code that creates a MediaStreamGraphImpl and returns it as a
MediaStreamGraph.

--HG--
extra : rebase_source : 9d006e5bf9bb056b5a54fc7aec159c26376c1459