Adds a function to get the texture resource of a framebuffer's color render target. TRAC #22349 Author: Shannon Woods Signed-off-by: Jamie Madill Signed-off-by: Daniel Koch git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1761 736b8ea6-26fd-11df-bfd4-992fa37f6226