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

Source/platform/transforms/TransformOperations.h

Index: Source/platform/transforms/TransformOperations.h
diff --git a/Source/platform/transforms/TransformOperations.h b/Source/platform/transforms/TransformOperations.h
index 12b551ee97e3315007af548c3cf7a4b2735956f3..9e564f978d68bac36c0306361bbe54155fd56b25 100644
--- a/Source/platform/transforms/TransformOperations.h
+++ b/Source/platform/transforms/TransformOperations.h
@@ -31,7 +31,7 @@
 #include "wtf/Vector.h"
 
 namespace WebCore {
-
+class FloatBox;
 class PLATFORM_EXPORT TransformOperations {
     WTF_MAKE_FAST_ALLOCATED;
 public:
@@ -81,6 +81,7 @@ public:
     size_t size() const { return m_operations.size(); }
     const TransformOperation* at(size_t index) const { return index < m_operations.size() ? m_operations.at(index).get() : 0; }
 
+    bool blendedBoundsForBox(const FloatBox&, const TransformOperations& from, const double& minProgress, const double& maxProgress, FloatBox* bounds) const;
     TransformOperations blendByMatchingOperations(const TransformOperations& from, const double& progress) const;
     TransformOperations blendByUsingMatrixInterpolation(const TransformOperations& from, double progress) const;
     TransformOperations blend(const TransformOperations& from, double progress) const;