Revert of Remove the acclerated overflow scroll and fixed root background flags.

chrome/browser/chromeos/login/chrome_restart_request.cc

 // Copyright 2013 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/browser/chromeos/login/chrome_restart_request.h"
 
 #include <vector>
 
 #include "ash/ash_switches.h"
 #include "base/command_line.h"
@@ skipping 53 matching lines @@
 // - Set start url if given;
 // - Append/override switches using |new_switches|;
 std::string DeriveCommandLine(const GURL& start_url,
                               const CommandLine& base_command_line,
                               const base::DictionaryValue& new_switches,
                               CommandLine* command_line) {
   DCHECK_NE(&base_command_line, command_line);
 
   static const char* kForwardSwitches[] = {
     ::switches::kDisableAccelerated2dCanvas,
+    ::switches::kDisableAcceleratedOverflowScroll,
     ::switches::kDisableAcceleratedVideoDecode,
     ::switches::kDisableDelegatedRenderer,
     ::switches::kDisableDistanceFieldText,
     ::switches::kDisableGpu,
     ::switches::kDisableGpuShaderDiskCache,
     ::switches::kDisableGpuWatchdog,
     ::switches::kDisableGpuCompositing,
     ::switches::kDisableGpuRasterization,
     ::switches::kDisableImplSidePainting,
     ::switches::kDisableLowResTiling,
     ::switches::kDisableMediaSource,
     ::switches::kDisablePreferCompositingToLCDText,
     ::switches::kDisablePrefixedEncryptedMedia,
     ::switches::kDisablePanelFitting,
     ::switches::kDisableSeccompFilterSandbox,
     ::switches::kDisableSetuidSandbox,
     ::switches::kDisableTouchDragDrop,
     ::switches::kDisableTouchEditing,
+    ::switches::kDisableAcceleratedFixedRootBackground,
     ::switches::kDisableZeroCopy,
+    ::switches::kEnableAcceleratedFixedRootBackground,
+    ::switches::kEnableAcceleratedOverflowScroll,
     ::switches::kEnableBeginFrameScheduling,
     ::switches::kEnablePreferCompositingToLCDText,
     ::switches::kEnableDelegatedRenderer,
     ::switches::kEnableDisplayList2dCanvas,
     ::switches::kEnableEncryptedMedia,
     ::switches::kDisableGpuSandbox,
     ::switches::kDisableDeferredFilters,
     ::switches::kEnableContainerCulling,
     ::switches::kEnableDistanceFieldText,
     ::switches::kEnableGpuRasterization,
@@ skipping 264 matching lines @@
     // Relaunch chrome without session manager on dev box.
     ReLaunch(command_line);
     return;
   }
 
   // ChromeRestartRequest deletes itself after request sent to session manager.
   (new ChromeRestartRequest(command_line))->Start();
 }
 
 }  // namespace chromeos