Revert of Delete the enable/disable layer squashing flags and settings.

chrome/browser/about_flags.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/browser/about_flags.h"
 
 #include <iterator>
 #include <map>
 #include <set>
 #include <utility>
@@ skipping 412 matching lines @@
 //
 // When adding a new choice, add it to the end of the list.
 const Experiment kExperiments[] = {
   {
     "ignore-gpu-blacklist",
     IDS_FLAGS_IGNORE_GPU_BLACKLIST_NAME,
     IDS_FLAGS_IGNORE_GPU_BLACKLIST_DESCRIPTION,
     kOsAll,
     SINGLE_VALUE_TYPE(switches::kIgnoreGpuBlacklist)
   },
+  {
+    "disable_layer_squashing",
+    IDS_FLAGS_DISABLE_LAYER_SQUASHING_NAME,
+    IDS_FLAGS_DISABLE_LAYER_SQUASHING_DESCRIPTION,
+    kOsAll,
+    SINGLE_VALUE_TYPE(switches::kDisableLayerSquashing)
+  },
 #if defined(OS_WIN)
   {
     "disable-direct-write",
     IDS_FLAGS_DISABLE_DIRECT_WRITE_NAME,
     IDS_FLAGS_DISABLE_DIRECT_WRITE_DESCRIPTION,
     kOsWin,
     SINGLE_VALUE_TYPE(switches::kDisableDirectWrite)
   },
 #endif
   {
@@ skipping 2193 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags