Add a switch for using PNaCl Subzero and use it for -O0 translation.

chrome/browser/chrome_content_browser_client.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 "chrome/browser/chrome_content_browser_client.h"
 
 #include <set>
 #include <utility>
 #include <vector>
 
@@ skipping 1402 matching lines @@
       switches::kDisableBundledPpapiFlash,
       switches::kDisableCastStreamingHWEncoding,
       switches::kDisableJavaScriptHarmonyShipping,
       switches::kDisableNewBookmarkApps,
       switches::kDisableOutOfProcessPdf,
       switches::kEnableBenchmarking,
       switches::kEnableNaCl,
 #if !defined(DISABLE_NACL)
       switches::kEnableNaClDebug,
       switches::kEnableNaClNonSfiMode,
+      switches::kEnablePNaClSubzero,
 #endif
       switches::kEnableNetBenchmarking,
       switches::kEnableNewBookmarkApps,
       switches::kEnableOutOfProcessPdf,
       switches::kEnablePluginPlaceholderShadowDom,
       switches::kJavaScriptHarmony,
       switches::kMessageLoopHistogrammer,
       switches::kPpapiFlashArgs,
       switches::kPpapiFlashPath,
       switches::kPpapiFlashVersion,
@@ skipping 26 matching lines @@
     command_line->CopySwitchesFrom(browser_command_line, kSwitchNames,
                                    arraysize(kSwitchNames));
 #endif
   } else if (process_type == switches::kZygoteProcess) {
     static const char* const kSwitchNames[] = {
       // Load (in-process) Pepper plugins in-process in the zygote pre-sandbox.
       switches::kDisableBundledPpapiFlash,
 #if !defined(DISABLE_NACL)
       switches::kEnableNaClDebug,
       switches::kEnableNaClNonSfiMode,
+      switches::kEnablePNaClSubzero,
       switches::kNaClDangerousNoSandboxNonSfi,
       switches::kUseNaClHelperNonSfi,
 #endif
       switches::kPpapiFlashPath,
       switches::kPpapiFlashVersion,
     };
 
     command_line->CopySwitchesFrom(browser_command_line, kSwitchNames,
                                    arraysize(kSwitchNames));
   } else if (process_type == switches::kGpuProcess) {
@@ skipping 1094 matching lines @@
       switches::kDisableWebRtcEncryption,
     };
     to_command_line->CopySwitchesFrom(from_command_line,
                                       kWebRtcDevSwitchNames,
                                       arraysize(kWebRtcDevSwitchNames));
   }
 }
 #endif  // defined(ENABLE_WEBRTC)
 
 }  // namespace chrome