cc: Don't consider HUD layer for touches

cc/math_util.h

Index: cc/math_util.h
diff --git a/cc/math_util.h b/cc/math_util.h
index 8c1ca88675dbde5e7aee2e77ab6ad0d1684beee0..468afad0ca458bcc457fd71b29565f79d48daa93 100644
--- a/cc/math_util.h
+++ b/cc/math_util.h
@@ -119,6 +119,9 @@ public:
     // Projects the |source| vector onto |destination|. Neither vector is assumed to be normalized.
     static gfx::Vector2dF projectVector(gfx::Vector2dF source, gfx::Vector2dF destination);
 
+    // Returns true if screen point hits a rect
+    static bool pointHitsRect(const gfx::PointF& screenSpacePoint, const gfx::Transform& localSpaceToScreenSpaceTransform, gfx::RectF localSpaceRect);
+
     // Conversion to value.
     static scoped_ptr<base::Value> asValue(gfx::Size s);
     static scoped_ptr<base::Value> asValue(gfx::PointF q);