Allow to have a transparent UA dependent background.

chrome/common/chrome_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 "chrome/common/chrome_switches.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "build/build_config.h"
 
@@ skipping 1340 matching lines @@
 bool NewTaskManagerEnabled() {
 #if defined(OS_MACOSX)
   return false;  // The new task manager hasn't been adopted on Mac yet.
 #else
   return !base::CommandLine::ForCurrentProcess()->HasSwitch(
       kDisableNewTaskManager);
 #endif  // defined(OS_MACOSX)
 }
 #endif  // defined(ENABLE_TASK_MANAGER)
 
+// Do not set a UA dependent background.
+const char kNoUADependentBackground[] = "no-ua-dependent-background";
+
 // -----------------------------------------------------------------------------
 // DO NOT ADD YOUR CRAP TO THE BOTTOM OF THIS FILE.
 //
 // You were going to just dump your switches here, weren't you? Instead, please
 // put them in alphabetical order above, or in order inside the appropriate
 // ifdef at the bottom. The order should match the header.
 // -----------------------------------------------------------------------------
 
 }  // namespace switches