Remove the kDisableGpuProcessPrelaunch flag and disable tests.

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 179 matching lines @@
 const char kDisableGpu[]                    = "disable-gpu";
 
 // Prevent the compositor from using its GPU implementation.
 const char kDisableGpuCompositing[]         = "disable-gpu-compositing";
 
 // Disable the limit on the number of times the GPU process may be restarted
 // This switch is intended only for tests.
 extern const char kDisableGpuProcessCrashLimit[] =
     "disable-gpu-process-crash-limit";
 
-// Do not launch the GPU process shortly after browser process launch. Instead
-// launch it when it is first needed.
-const char kDisableGpuProcessPrelaunch[]    = "disable-gpu-process-prelaunch";
-
 // Disable GPU rasterization, i.e. rasterize on the CPU only.
 // Overrides the kEnableGpuRasterization and kForceGpuRasterization flags.
 const char kDisableGpuRasterization[]       = "disable-gpu-rasterization";
 
 // When using CPU rasterizing disable low resolution tiling. This uses
 // less power, particularly during animations, but more white may be seen
 // during fast scrolling especially on slower devices.
 const char kDisableLowResTiling[] = "disable-low-res-tiling";
 
 // Disable the GPU process sandbox.
@@ skipping 838 matching lines @@
 #endif
 
 #if defined(OS_POSIX)
 // Causes the child processes to cleanly exit via calling exit().
 const char kChildCleanExit[]                = "child-clean-exit";
 #endif
 
 // Don't dump stuff here, follow the same order as the header.
 
 }  // namespace switches