Remove unused methods in WebGraphicsContext3D: isGLES2Compliant() and getPlatformTextureId()

BUG=

Review URL: https://chromiumcodereview.appspot.com/16200002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@203301 0039d316-1c4b-4281-b951-d872f2087c98
8 files changed