Let --js-flags work when Harmony is enabled in about:flags

content/public/common/content_switches.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/public/common/content_switches.h"
 
 #include "base/command_line.h"
 
 namespace switches {
 
@@ skipping 539 matching lines @@
 // Run the GPU process as a thread in the browser process.
 const char kInProcessGPU[]                  = "in-process-gpu";
 
 // Overrides the timeout, in seconds, that a child process waits for a
 // connection from the browser before killing itself.
 const char kIPCConnectionTimeout[]          = "ipc-connection-timeout";
 
 // Specifies the flags passed to JS engine
 const char kJavaScriptFlags[]               = "js-flags";
 
+// Enable Harmony (ECMAScript 6) experimental features in JavaScript.
+const char kJavaScriptHarmony[]             = "enable-javascript-harmony";
+
 // Load an NPAPI plugin from the specified path.
 const char kLoadPlugin[]                    = "load-plugin";
 
 // Logs GPU control list decisions when enforcing blacklist rules.
 const char kLogGpuControlListDecisions[]    = "log-gpu-control-list-decisions";
 
 // Sets the minimum log level. Valid values are from 0 to 3:
 // INFO = 0, WARNING = 1, LOG_ERROR = 2, LOG_FATAL = 3.
 const char kLoggingLevel[]                  = "log-level";
 
@@ skipping 367 matching lines @@
 // Enable the Win32K process mitigation policy for renderer processes which
 // prevents them from invoking user32 and gdi32 system calls which enter
 // the kernel. This is only supported on Windows 8 and beyond.
 const char kEnableWin32kRendererLockDown[]
     = "enable_win32k_renderer_lockdown";
 #endif
 
 // Don't dump stuff here, follow the same order as the header.
 
 }  // namespace switches