Adding Blink-side 3d Box and Bounds calculations to TransformOperations

Source/platform/transforms/InterpolatedTransformOperation.h

Index: Source/platform/transforms/InterpolatedTransformOperation.h
diff --git a/Source/platform/transforms/InterpolatedTransformOperation.h b/Source/platform/transforms/InterpolatedTransformOperation.h
index 108d172f071aecad7f27936d57c7bd9be5237865..6b51d759b1fbb092fc53e2d73c1fc23c7885e950 100644
--- a/Source/platform/transforms/InterpolatedTransformOperation.h
+++ b/Source/platform/transforms/InterpolatedTransformOperation.h
@@ -44,6 +44,11 @@ public:
         return adoptRef(new InterpolatedTransformOperation(from, to, progress));
     }
 
+    virtual bool canBlendWith(const TransformOperation& other) const
+    {
+        return isSameType(other);
+    }
+
 private:
     virtual bool isIdentity() const OVERRIDE { return false; }