1 files changed, 6 insertions, 0 deletions
diff --git a/include/core/SkClipStack.h b/include/core/SkClipStack.h
index 850a3f0..ae0b974 100644
--- a/include/core/SkClipStack.h
+++ b/include/core/SkClipStack.h
@@ -10,8 +10,13 @@ class SkPath;
 class SK_API SkClipStack {
 public:
     SkClipStack();
+    SkClipStack(const SkClipStack& b);
     ~SkClipStack() {}
 
+    SkClipStack& operator=(const SkClipStack& b);
+    bool operator==(const SkClipStack& b) const;
+    bool operator!=(const SkClipStack& b) const { return !(*this == b); }
+
     void reset();
 
     int getSaveCount() const { return fSaveCount; }
@@ -37,6 +42,7 @@ public:
         B2FIter(const SkClipStack& stack);
 
         struct Clip {
+            friend bool operator==(const Clip& a, const Clip& b);
             const SkRect*   fRect;  // if non-null, this is a rect clip
             const SkPath*   fPath;  // if non-null, this is a path clip
             SkRegion::Op    fOp;