Add detection for rotation and flip overlay transforms

cc/output/gl_renderer.cc

Index: cc/output/gl_renderer.cc
diff --git a/cc/output/gl_renderer.cc b/cc/output/gl_renderer.cc
index 9cbb9d15b06a3427d3171b9f5ccf5b6dcfcd2988..d406fc08d676d328729ea5fa183ca6d969fdec1a 100644
--- a/cc/output/gl_renderer.cc
+++ b/cc/output/gl_renderer.cc
@@ -72,7 +72,7 @@ Float4 UVTransform(const TextureDrawQuad* quad) {
   gfx::PointF uv0 = quad->uv_top_left;
   gfx::PointF uv1 = quad->uv_bottom_right;
   Float4 xform = {{uv0.x(), uv0.y(), uv1.x() - uv0.x(), uv1.y() - uv0.y()}};
-  if (quad->flipped) {
+  if (quad->y_flipped) {
     xform.data[1] = 1.0f - xform.data[1];
     xform.data[3] = -xform.data[3];
   }