Remove the acclerated overflow scroll and fixed root background flags.

chrome/browser/about_flags.cc

Index: chrome/browser/about_flags.cc
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index 64852e3ded3cc10371e65e8762dba76e92dac5a1..fd0cb455270f06c06b97ac4d2f08c773a3716d25 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -149,14 +149,6 @@ const Experiment::Choice kEnableCompositingForTransitionChoices[] = {
     switches::kDisableCompositingForTransition, ""},
 };
 
-const Experiment::Choice kEnableAcceleratedFixedRootBackgroundChoices[] = {
-  { IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
-  { IDS_GENERIC_EXPERIMENT_CHOICE_ENABLED,
-    switches::kEnableAcceleratedFixedRootBackground, ""},
-  { IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED,
-    switches::kDisableAcceleratedFixedRootBackground, ""},
-};
-
 const Experiment::Choice kTouchEventsChoices[] = {
   { IDS_GENERIC_EXPERIMENT_CHOICE_AUTOMATIC, "", "" },
   { IDS_GENERIC_EXPERIMENT_CHOICE_ENABLED,
@@ -542,14 +534,6 @@ const Experiment kExperiments[] = {
     SINGLE_VALUE_TYPE(switches::kIgnoreGpuBlacklist)
   },
   {
-    "force-accelerated-composited-scrolling",
-     IDS_FLAGS_FORCE_ACCELERATED_OVERFLOW_SCROLL_MODE_NAME,
-     IDS_FLAGS_FORCE_ACCELERATED_OVERFLOW_SCROLL_MODE_DESCRIPTION,
-     kOsAll,
-     ENABLE_DISABLE_VALUE_TYPE(switches::kEnableAcceleratedOverflowScroll,
-                               switches::kDisableAcceleratedOverflowScroll)
-  },
-  {
     "disable_layer_squashing",
     IDS_FLAGS_DISABLE_LAYER_SQUASHING_NAME,
     IDS_FLAGS_DISABLE_LAYER_SQUASHING_DESCRIPTION,
@@ -650,13 +634,6 @@ const Experiment kExperiments[] = {
     kOsAll,
     MULTI_VALUE_TYPE(kEnableCompositingForTransitionChoices)
   },
-  {
-    "enable-accelerated-fixed-root-background",
-    IDS_FLAGS_ACCELERATED_FIXED_ROOT_BACKGROUND_NAME,
-    IDS_FLAGS_ACCELERATED_FIXED_ROOT_BACKGROUND_DESCRIPTION,
-    kOsAll,
-    MULTI_VALUE_TYPE(kEnableAcceleratedFixedRootBackgroundChoices)
-  },
   // Native client is compiled out when DISABLE_NACL is defined.
 #if !defined(DISABLE_NACL)
   {