Revert of Make SingleThreadProxy a SchedulerClient

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"
 
 #include "base/command_line.h"
 
 namespace switches {
 
@@ skipping 228 matching lines @@
 
 // Disable session storage.
 const char kDisableSessionStorage[]         = "disable-session-storage";
 
 // Disable the setuid sandbox (Linux only).
 const char kDisableSetuidSandbox[]          = "disable-setuid-sandbox";
 
 // Disable shared workers.
 const char kDisableSharedWorkers[]          = "disable-shared-workers";
 
-// For tests, disable single thread scheduler and only manually composite.
-const char kDisableSingleThreadProxyScheduler[] =
-    "disable-single-thread-proxy-scheduler";
-
 // Disables site-specific tailoring to compatibility issues in WebKit.
 const char kDisableSiteSpecificQuirks[]     = "disable-site-specific-quirks";
 
 // Disable smooth scrolling for testing.
 const char kDisableSmoothScrolling[]        = "disable-smooth-scrolling";
 
 // Disables the use of a 3D software rasterizer.
 const char kDisableSoftwareRasterizer[]     = "disable-software-rasterizer";
 
 // Disable multithreaded GPU compositing of web content.
@@ skipping 687 matching lines @@
 // Enable the Win32K process mitigation policy for renderer processes which
 // prevents them from invoking user32 and gdi32 system calls which enter
 // the kernel. This is only supported on Windows 8 and beyond.
 const char kEnableWin32kRendererLockDown[]
     = "enable_win32k_renderer_lockdown";
 #endif
 
 // Don't dump stuff here, follow the same order as the header.
 
 }  // namespace switches