Remove old APIs for copyTextureCHROMIUM(...) and copyVideoTextureToPlatformTexture(...).

Since all clients switched to use the new version of copyTextureCHROMIUM(...) and
copyVideoTextureToPlatformTexture(...), the older version should be removed.

BUG=239341

Review URL: https://chromiumcodereview.appspot.com/14972017

git-svn-id: svn://svn.chromium.org/blink/trunk@150869 bbb929c8-8fbe-4397-9dbb-9b2b20218538
2 files changed