add dumpHex option to rect and rrect, to match path

src/core/SkStringUtils.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkStringUtils_DEFINED
 #define SkStringUtils_DEFINED
 
 class SkString;
 
 /**
  * Add 'flagStr' to 'string' and set 'needSeparator' to true only if 'flag' is
  * true. If 'needSeparator' is true append a '|' before 'flagStr'. This method
  * is used to streamline the creation of ASCII flag strings within the toString
  * methods.
  */
 void SkAddFlagToString(SkString* string, bool flag,
                        const char* flagStr, bool* needSeparator);
 
 
+enum SkScalarAsStringType {
+    kDec_SkScalarAsStringType,
+    kHex_SkScalarAsStringType,
+};
+
+void SkAppendScalar(SkString*, SkScalar, SkScalarAsStringType);
+
+static inline void SkAppendScalarDec(SkString* str, SkScalar value) {
+    SkAppendScalar(str, value, kDec_SkScalarAsStringType);
+}
+
+static inline void SkAppendScalarHex(SkString* str, SkScalar value) {
+    SkAppendScalar(str, value, kHex_SkScalarAsStringType);
+}
+
 #endif