Last step of removing IsRunningOnIOS8OrLater()

base/ios/ios_util.mm

 // Copyright 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 "base/ios/ios_util.h"
 
 #import <Foundation/Foundation.h>
 #include <stddef.h>
 
 #include "base/macros.h"
@@ skipping 10 matching lines @@
   return digits;
 }
 
 std::string* g_icudtl_path_override = nullptr;
 
 }  // namespace
 
 namespace base {
 namespace ios {
 
-// When dropping iOS7 support, also address issues listed in crbug.com/502968.
-bool IsRunningOnIOS8OrLater() {
-  return IsRunningOnOrLater(8, 0, 0);
-}
-
 bool IsRunningOnIOS9OrLater() {
   return IsRunningOnOrLater(9, 0, 0);
 }
 
 bool IsRunningOnIOS10OrLater() {
   return IsRunningOnOrLater(10, 0, 0);
 }
 
 bool IsRunningOnOrLater(int32_t major, int32_t minor, int32_t bug_fix) {
   static const int32_t* current_version = OSVersionAsArray();
@@ skipping 17 matching lines @@
 
 FilePath FilePathOfEmbeddedICU() {
   if (g_icudtl_path_override) {
     return FilePath(*g_icudtl_path_override);
   }
   return FilePath();
 }
 
 }  // namespace ios
 }  // namespace base