Rename SkDescriptor::equals to SkDescriptor::operator==

src/core/SkDescriptor.h

Index: src/core/SkDescriptor.h
diff --git a/src/core/SkDescriptor.h b/src/core/SkDescriptor.h
index 0f13acde97ca76ee8b14386e660ed703fbe25382..736021953b8fc34f22d43e3cd6e9e619ba1c8f0d 100644
--- a/src/core/SkDescriptor.h
+++ b/src/core/SkDescriptor.h
@@ -85,7 +85,7 @@ public:
         return desc;
     }
 
-    bool equals(const SkDescriptor& other) const {
+    bool operator==(const SkDescriptor& other) const {
         // probe to see if we have a good checksum algo
 //        SkASSERT(a.fChecksum != b.fChecksum || memcmp(&a, &b, a.fLength) == 0);