[chromium] Remove the WebVideoFrame, WebVideoFrameProvider, WebStreamTextureClient, and WebVideoLayer classes.
https://bugs.webkit.org/show_bug.cgi?id=112483

Reviewed by James Robinson.

Source/Platform:

These classes are no longer used, so remove them. And remove APIs
to provide them.

* Platform.gypi:
* chromium/public/WebCompositorSupport.h:
(WebKit):
* chromium/public/WebVideoFrame.h: Removed.
* chromium/public/WebVideoFrameProvider.h: Removed.
* chromium/public/WebVideoLayer.h: Removed.

Source/WebKit/chromium:

These classes are no longer used, so remove them.

* WebKit.gyp:
* public/WebMediaPlayer.h:
(WebKit):
(WebMediaPlayer):
* public/WebStreamTextureClient.h: Removed.
* public/WebVideoFrame.h: Removed.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@146957 268f45cc-cd09-0410-ab3c-d52691b4dbfc