Remove gesture.config_is_trustworthy pref

gesture.config_is_trustworthy pref is a temporary flag added in M30 to
do a one-time wipe of gesture config prefs. After two milestones, the
prefs should have been wiped for a good majority of users. So, the flag
is not needed anymore.

BUG=269292

Review URL: https://codereview.chromium.org/162193002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251293 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/ui/gesture_prefs_observer_factory_aura.cc

@@ -140,10 +140,6 @@ GesturePrefsObserver::GesturePrefsObserver(PrefService* prefs)
   // Clear for migration.
   prefs->ClearPref(kMinScrollSuccessiveVelocityEvents);
 
-  // Clear temporary pref gesture.config_is_trustworthy, so that in M33, we can
-  // remove it completely: crbug.com/269292.
-  prefs->ClearPref(prefs::kGestureConfigIsTrustworthy);
-
   registrar_.Init(prefs);
   registrar_.RemoveAll();
   base::Closure callback = base::Bind(&GesturePrefsObserver::Update,
@@ -449,12 +445,6 @@ void GesturePrefsObserverFactoryAura::RegisterProfilePrefs(
 
   RegisterOverscrollPrefs(registry);
   RegisterFlingCurveParameters(registry);
-
-  // Register pref for a one-time wipe of all gesture preferences.
-  registry->RegisterBooleanPref(
-      prefs::kGestureConfigIsTrustworthy,
-      false,
-      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 }
 
 bool

chrome/common/pref_names.cc

@@ -2573,11 +2573,6 @@ const char kOverscrollHorizontalResistThreshold[] =
     "overscroll.horizontal_resist_threshold";
 const char kOverscrollVerticalResistThreshold[] =
     "overscroll.vertical_resist_threshold";
-// TODO(mohsen): Remove following pref in M33. By then, it will have been
-// cleared from preferences file for majority of users and it will be ready to
-// be removed: crbug.com/269292.
-// A temporary pref to do a one-time wipe of gesture preferences.
-const char kGestureConfigIsTrustworthy[] = "gesture.config_is_trustworthy";
 #endif
 
 // Counts how many more times the 'profile on a network share' warning should be

chrome/common/pref_names.h

@@ -903,7 +903,6 @@ extern const char kOverscrollMinimumThresholdStartTouchpad[];
 extern const char kOverscrollVerticalThresholdStart[];
 extern const char kOverscrollHorizontalResistThreshold[];
 extern const char kOverscrollVerticalResistThreshold[];
-extern const char kGestureConfigIsTrustworthy[];
 #endif
 
 extern const char kNetworkProfileWarningsLeft[];