add dumpHex option to rect and rrect, to match path

src/core/SkStringUtils.cpp

Index: src/core/SkStringUtils.cpp
diff --git a/src/core/SkStringUtils.cpp b/src/core/SkStringUtils.cpp
index 0f93b8e30dcdb46a81de9bf32f7f90c2b8e28267..390de7f264b599598366f54b38d724e9a6ac4afb 100644
--- a/src/core/SkStringUtils.cpp
+++ b/src/core/SkStringUtils.cpp
@@ -17,3 +17,21 @@ void SkAddFlagToString(SkString* string, bool flag, const char* flagStr, bool* n
         *needSeparator = true;
     }
 }
+
+void SkAppendScalar(SkString* str, SkScalar value, SkScalarAsStringType asType) {
+    switch (asType) {
+        case kHex_SkScalarAsStringType:
+            str->appendf("SkBits2Float(0x%08x)", SkFloat2Bits(value));
+            break;
+        case kDec_SkScalarAsStringType: {
+            SkString tmp;
+            tmp.printf("%g", value);
+            if (tmp.contains('.')) {
+                tmp.appendUnichar('f');
+            }
+            str->append(tmp);
+            break;
+        }
+    }
+}
+