zijiehe 556f49d6b6 Remove the requirement of D3D_FEATURE_LEVEL_11_0, but export the D3D_FEATURE_LEVEL through APIs
D3D_FEATURE_LEVEL_11_0 is not offically documented on MSDN to be a requirement
of DXGI duplicator APIs. So instead of using D3D_FEATURE_LEVEL_11_0 as a
requirement in D3dDevice::Initialize(), this change adds a
ScreenCapturerWinDirectx::SupportedFeatureLevel() function to retrieves minimum
and maximium for further reference (in HostTraits to control the experiment).

BUG=314516

Review-Url: https://codereview.webrtc.org/2468083002
Cr-Commit-Position: refs/heads/master@{#14962}
2016-11-08 02:35:19 +00:00
..
2016-10-19 01:22:25 +00:00
2016-10-19 01:22:25 +00:00