Add regex escaping code to Mac sandbox implementation and re-enable the utility process on OS X.

chrome/app/chrome_dll_main.cc

 // Copyright (c) 2009 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.
 
 // TODO(port): the ifdefs in here are a first step towards trying to determine
 // the correct abstraction for all the OS functionality required at this
 // stage of process initialization. It should not be taken as a final
 // abstraction.
 
 #include "build/build_config.h"
@@ skipping 536 matching lines @@
   }
 #endif  // NDEBUG
 
   if (!process_type.empty())
     CommonSubprocessInit();
 
 #if defined (OS_MACOSX)
   // On OS X the renderer sandbox needs to be initialized later in the startup
   // sequence in RendererMainPlatformDelegate::PlatformInitialize().
   if (process_type != switches::kRendererProcess &&
-      process_type != switches::kExtensionProcess)
-    sandbox_wrapper.InitializeSandbox(parsed_command_line, process_type);
+      process_type != switches::kExtensionProcess) {
+    bool sandbox_initialized_ok =
+        sandbox_wrapper.InitializeSandbox(parsed_command_line, process_type);
+    // Die if the sandbox can't be enabled.
+    CHECK(sandbox_initialized_ok) << "Error initializing sandbox for "
+                                  << process_type;
+  }
 #endif  // OS_MACOSX
 
   startup_timer.Stop();  // End of Startup Time Measurement.
 
   MainFunctionParams main_params(parsed_command_line, sandbox_wrapper,
                                  &autorelease_pool);
 
   // TODO(port): turn on these main() functions as they've been de-winified.
   int rv = -1;
   if (process_type == switches::kRendererProcess) {
@@ skipping 97 matching lines @@
 
   logging::CleanupChromeLogging();
 
 #if defined(OS_MACOSX) && defined(GOOGLE_CHROME_BUILD)
   // TODO(mark): See the TODO(mark) above at InitCrashReporter.
   DestructCrashReporter();
 #endif  // OS_MACOSX && GOOGLE_CHROME_BUILD
 
   return rv;
 }