Patch from Nicolas at Transgaming.

This should fix the hang bug we've been seeing.

Apparently this was accidentally disabled when the project was switched to VS2010.

Older versions used stdcall, so change the signature for backwards compatibility.

Patch from Nicolas at Transgaming.

The last SwiftShader drop had a bug with 16-bit textures.

SwiftShader had been crashing on certain websites with Flash. This change prevents that.

April code dump from Transgaming. Adds new shader compiler.

We've seen some issues loading swiftshader, so use GDI to present to the screen.
Review URL: https://chromereviews.googleplex.com/4156013

There was a bug in ANGLE where the serial wasn't being properly changed when the render target was reset, so as a hack always resend the render target. See chromium bug 118953.
Review URL: https://chromereviews.googleplex.com/4159013

This wasn't delay-loading dwmapi.dll, causing it to fail on XP.
Review URL: https://chromereviews.googleplex.com/3895016

For some reason these were missing in my old checkin.

Oct 6 code drop from Transgaming
Review URL: https://chromereviews.googleplex.com/3846015

This header will be included in builds that use swiftshader, and will be used to avoid having a watermark on images.
Review URL: https://chromereviews.googleplex.com/3765016