[DevTools] Support CommandLineAPI in snippets

third_party/WebKit/Source/platform/v8_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 968 matching lines @@
                     return "Could not resolve function by id";
                 InjectedScriptHost.setFunctionVariableValue(func, scopeNumber, variableName, resolvedValue);
             }
         } catch (e) {
             return toString(e);
         }
         return undefined;
     },
 
     /**
+     * @return {!CommandLineAPI}
+     */
+    commandLineAPI: function()
+    {
+        return new CommandLineAPI(this._commandLineAPIImpl, null);
+    },
+
+    /**
      * @param {!JavaScriptCallFrame} topCallFrame
      * @param {string} callFrameId
      * @return {?JavaScriptCallFrame}
      */
     _callFrameForId: function(topCallFrame, callFrameId)
     {
         var parsedCallFrameId = nullifyObjectProto(/** @type {!Object} */ (InjectedScriptHost.eval("(" + callFrameId + ")")));
         var ordinal = parsedCallFrameId["ordinal"];
         var callFrame = topCallFrame;
         while (--ordinal >= 0 && callFrame)
@@ skipping 927 matching lines @@
      */
     _logEvent: function(event)
     {
         inspectedGlobalObject.console.log(event.type, event);
     }
 }
 
 injectedScript._commandLineAPIImpl = new CommandLineAPIImpl();
 return injectedScript;
 })