Add a runtime switch to control whether NaCl uses the IPC or SRPC Proxy.

chrome/common/nacl_cmd_line.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 "base/basictypes.h"
 #include "base/command_line.h"
 #include "chrome/common/chrome_switches.h"
 
 namespace nacl {
 
 void CopyNaClCommandLineArguments(CommandLine* cmd_line) {
   const CommandLine& browser_command_line = *CommandLine::ForCurrentProcess();
 
   // Propagate the following switches to the NaCl loader command line (along
   // with any associated values) if present in the browser command line.
   // TODO(gregoryd): check which flags of those below can be supported.
   static const char* const kSwitchNames[] = {
     switches::kNoSandbox,
     switches::kTestNaClSandbox,
     switches::kDisableBreakpad,
     switches::kFullMemoryCrashReport,
     switches::kEnableLogging,
     switches::kDisableLogging,
     switches::kLoggingLevel,
     switches::kEnableDCHECK,
     switches::kSilentDumpOnDCHECK,
     switches::kMemoryProfiling,
     switches::kEnableNaClDebug,
     switches::kNoErrorDialogs,
+    switches::kEnableNaClIPCProxy,
   };
   cmd_line->CopySwitchesFrom(browser_command_line, kSwitchNames,
                              arraysize(kSwitchNames));
 }
 
 }  // namespace nacl