This change includes the following:
* Skeleton classes for a couple of base MediaFoundation classes (no code yet). See *_mf.*.
* Renaming the DirectShow based implementation from "_windows" to "_ds".
* Move the VideoCaptureImpl::CreateDeviceInfo() method into video_capture_factory_windows.cc
The reason for this is that that's where the other VideoCaptureImpl factory function is
and the factory function won't be implementation specific.
* Removed use of <initguid.h> from a header file to avoid defining the same guids in multiple object files.
(more info here: http://msdn.microsoft.com/en-us/library/windows/desktop/dd375463(v=vs.85).aspx)
* Moved a couple of global variables from the capture_delay_values_windows.h header and into
device_info_ds.cc since that's the only file that uses those variables.
* Delete capture_delay_values_windows.h.
* Added a factory function: DeviceInfoDS::Create() that'll create the DirectShow specific implementation.
TEST=This is mostly moving code around. The code that is added, is currently "dead". No manual testing needed.
BUG=chromium:140545
Review URL: https://webrtc-codereview.appspot.com/967008
git-svn-id: http://webrtc.googlecode.com/svn/trunk@3135 4adac7df-926f-26a2-2b94-8c16560cd09d
