DevTools: Allow setting -0 value to object property

Source/devtools/front_end/RemoteObject.js

Index: Source/devtools/front_end/RemoteObject.js
diff --git a/Source/devtools/front_end/RemoteObject.js b/Source/devtools/front_end/RemoteObject.js
index 8af134404c5f7e6624c2e9742e76d9873d50b5cd..67326ec6cedae5dfe7240a170eba92b3861244f8 100644
--- a/Source/devtools/front_end/RemoteObject.js
+++ b/Source/devtools/front_end/RemoteObject.js
@@ -285,8 +285,8 @@ WebInspector.RemoteObject.prototype = {
         // where property was defined; so do we.
         var setPropertyValueFunction = "function(a, b) { this[a] = b; }";
 
-        // Special case for NaN, Infinity and -Infinity
-        if (result.type === "number" && typeof result.value !== "number")
+        // Special case for NaN, Infinity, -Infinity, -0.
+        if (result.type === "number" && String(result.value) !== result.description)
             setPropertyValueFunction = "function(a) { this[a] = " + result.description + "; }";
 
         delete result.description; // Optimize on traffic.