add float equivalent in dumpHex output as comment

R=reed@google.com,bsalomon@google.com

Review URL: https://codereview.chromium.org/676803002
diff --git a/src/core/SkPath.cpp b/src/core/SkPath.cpp
index 06f8b7e..f756ce3 100644
--- a/src/core/SkPath.cpp
+++ b/src/core/SkPath.cpp
@@ -2050,7 +2050,21 @@
         str->append(", ");
         append_scalar(str, conicWeight, dumpAsHex);
     }
-    str->append(");\n");
+    str->append(");");
+    if (dumpAsHex) {
+        str->append("  // ");
+        for (int i = 0; i < count; ++i) {
+            append_scalar(str, values[i], false);
+            if (i < count - 1) {
+                str->append(", ");
+            }
+        }
+        if (conicWeight >= 0) {
+            str->append(", ");
+            append_scalar(str, conicWeight, false);
+        }
+    }
+    str->append("\n");
 }
 
 void SkPath::dump(SkWStream* wStream, bool forceClose, bool dumpAsHex) const {