DevTools: Extend Runtime.CallArgument to pass numbers that can not be JSON-stringified.

Source/core/inspector/InjectedScriptSource.js

 /*
  * Copyright (C) 2007 Apple Inc.  All rights reserved.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 563 matching lines @@
             var parsedArgId = this._parseObjectId(objectId);
             if (!parsedArgId || parsedArgId["injectedScriptId"] !== injectedScriptId)
                 throw "Arguments should belong to the same JavaScript world as the target object.";
 
             var resolvedArg = this._objectForId(parsedArgId);
             if (!this._isDefined(resolvedArg))
                 throw "Could not find object with given id";
 
             return resolvedArg;
         } else if ("value" in callArgumentJson) {
-            return callArgumentJson.value;
+            var value = callArgumentJson.value;
+            if (callArgumentJson.type === "number" && typeof value !== "number")
+                value = Number(value);
+            return value;
         }
         return undefined;
     },
 
     /**
      * @param {Function} evalFunction
      * @param {Object} object
      * @param {string} objectGroup
      * @param {boolean} isEvalOnCallFrame
      * @param {boolean} injectCommandLineAPI
@@ skipping 405 matching lines @@
     if (injectedScript.isPrimitiveValue(object) || object === null || forceValueType) {
         // We don't send undefined values over JSON.
         if (this.type !== "undefined")
             this.value = object;
 
         // Null object is object with 'null' subtype.
         if (object === null)
             this.subtype = "null";
 
         // Provide user-friendly number values.
-        if (this.type === "number")
+        if (this.type === "number") {
             this.description = toStringDescription(object);
+            // Override "value" property for values that can not be JSON-stringified.
+            switch (this.description) {
+            case "NaN":
+            case "Infinity":
+            case "-Infinity":
+            case "-0":
+                this.value = this.description;
+                break;
+            }
+        }
+
         return;
     }
 
     object = /** @type {Object} */ (object);
 
     this.objectId = injectedScript._bind(object, objectGroupName);
     var subtype = injectedScript._subtype(object);
     if (subtype)
         this.subtype = subtype;
     this.className = InjectedScriptHost.internalConstructorName(object);
@@ skipping 550 matching lines @@
      */
     _logEvent: function(event)
     {
         inspectedWindow.console.log(event.type, event);
     }
 }
 
 injectedScript._commandLineAPIImpl = new CommandLineAPIImpl();
 return injectedScript;
 })