[DevTools] Support CommandLineAPI in snippets

third_party/WebKit/Source/platform/v8_inspector/InjectedScript.cpp

 /*
  * Copyright (C) 2012 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 324 matching lines @@
         return;
     RefPtr<JSONObject> object;
     if (!parsedObjectId->asObject(&object))
         return;
     int boundId = 0;
     if (!object->getNumber("id", &boundId))
         return;
     m_native->unbind(boundId);
 }
 
+v8::MaybeLocal<v8::Value> InjectedScript::runCompiledScript(v8::Local<v8::Script> script, bool includeCommandLineAPI)
+{
+    v8::Local<v8::Symbol> commandLineAPISymbolValue = V8Debugger::commandLineAPISymbol(m_isolate);
+    v8::Local<v8::Object> global = context()->Global();
+    if (includeCommandLineAPI) {
+        V8FunctionCall function(m_client, context(), v8Value(), "commandLineAPI");
+        bool hadException = false;
+        v8::Local<v8::Value> commandLineAPI = function.call(hadException, false);
+        if (!hadException)
+            global->Set(commandLineAPISymbolValue, commandLineAPI);
+    }
+
+    v8::MaybeLocal<v8::Value> maybeValue = m_client->runCompiledScript(context(), script);
+    if (includeCommandLineAPI)
+        global->Delete(context(), commandLineAPISymbolValue);
+
+    return maybeValue;
+}
+
 PassRefPtr<Array<CallFrame>> InjectedScript::wrapCallFrames(v8::Local<v8::Object> callFrames, int asyncOrdinal)
 {
     v8::HandleScope handles(m_isolate);
     V8FunctionCall function(m_client, context(), v8Value(), "wrapCallFrames");
     function.appendArgument(callFrames);
     function.appendArgument(asyncOrdinal);
     bool hadException = false;
     v8::Local<v8::Value> callFramesValue = callFunctionWithEvalEnabled(function, hadException);
     ASSERT(!hadException);
     RefPtr<JSONValue> result = toJSONValue(context(), callFramesValue);
@@ skipping 166 matching lines @@
             *result = JSONString::create(String::format("Object has too long reference chain(must not be longer than %d)", JSONValue::maxDepth));
     }
 }
 
 void InjectedScript::dispose()
 {
     m_manager->discardInjectedScript(m_contextId);
 }
 
 } // namespace blink