Refactor cc scrollbar layers to separate solid-color vs desktop.

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"
 
 namespace switches {
 
 // By default, file:// URIs cannot read other file:// URIs. This is an
 // override for developers who need the old behavior for testing.
@@ skipping 817 matching lines @@
 // Bypass the media stream infobar by selecting the default device for media
 // streams (e.g. WebRTC). Works with --use-fake-device-for-media-stream.
 const char kUseFakeUIForMediaStream[]     = "use-fake-ui-for-media-stream";
 
 // Use hardware gpu, if available, for tests.
 const char kUseGpuInTests[]                 = "use-gpu-in-tests";
 
 // Set when Chromium should use a mobile user agent.
 const char kUseMobileUserAgent[] = "use-mobile-user-agent";
 
+// Turns on solid color scrollbars by default.
+const char kUseSolidColorScrollbars[] = "use-solid-color-scrollbars";
+
 // A string used to override the default user agent with a custom one.
 const char kUserAgent[]                     = "user-agent";
 
 // On POSIX only: the contents of this flag are prepended to the utility
 // process command line. Useful values might be "valgrind" or "xterm -e gdb
 // --args".
 const char kUtilityCmdPrefix[]              = "utility-cmd-prefix";
 
 // Causes the process to run as a utility subprocess.
 const char kUtilityProcess[]                = "utility";
@@ skipping 95 matching lines @@
 #endif
 
 #if defined(USE_AURA)
 // Forces usage of the test compositor. Needed to run ui tests on bots.
 extern const char kTestCompositor[]         = "test-compositor";
 #endif
 
 // Don't dump stuff here, follow the same order as the header.
 
 }  // namespace switches