Remove GrTexture::releaseRenderTarget() and add GrSurface::isSameAs().
Review URL: https://codereview.chromium.org/13414006

git-svn-id: http://skia.googlecode.com/svn/trunk/include@8525 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed