Removed use of IsRunningOnIOS8OrLater from ui_util and uikit_ui_util

ios/chrome/browser/ui/ui_util.mm

 // 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 "ios/chrome/browser/ui/ui_util.h"
 
 #import <UIKit/UIKit.h>
 
-#include "base/ios/ios_util.h"
 #include "base/logging.h"
 #import "ios/chrome/browser/ui/uikit_ui_util.h"
 #include "ui/gfx/ios/uikit_util.h"
 
 bool IsIPadIdiom() {
   UIUserInterfaceIdiom idiom = [[UIDevice currentDevice] userInterfaceIdiom];
   return idiom == UIUserInterfaceIdiomPad;
 }
 
 const CGFloat kPortraitWidth[INTERFACE_IDIOM_COUNT] = {
@@ skipping 15 matching lines @@
   return UIInterfaceOrientationIsPortrait(orient) ||
          orient == UIInterfaceOrientationUnknown;
 #endif  // SDK
 }
 
 bool IsLandscape() {
   return UIInterfaceOrientationIsLandscape(GetInterfaceOrientation());
 }
 
 CGFloat CurrentScreenHeight() {
-  CGSize screenSize = [UIScreen mainScreen].bounds.size;
-  if (base::ios::IsRunningOnIOS8OrLater()) {
-    return screenSize.height;
-  } else {
-    return IsPortrait() ? screenSize.height : screenSize.width;
-  }
+  return [UIScreen mainScreen].bounds.size.height;
 }
 
 CGFloat CurrentScreenWidth() {
-  CGSize screenSize = [UIScreen mainScreen].bounds.size;
-  if (base::ios::IsRunningOnIOS8OrLater()) {
-    return screenSize.width;
-  } else {
-    return IsPortrait() ? screenSize.width : screenSize.height;
-  }
+  return [UIScreen mainScreen].bounds.size.width;
 }
 
 CGFloat StatusBarHeight() {
   // Checking [UIApplication sharedApplication].statusBarFrame will return the
   // wrong offset when the application is started while in a phone call, so
   // simply return 20 here.
   return 20;
 }
 
 CGFloat AlignValueToPixel(CGFloat value) {
@@ skipping 85 matching lines @@
       projectTo.size = targetSize;
       break;
   }
 
   projectTo = CGRectIntegral(projectTo);
   // There's no CGSizeIntegral, faking one instead.
   CGRect integralRect = CGRectZero;
   integralRect.size = targetSize;
   targetSize = CGRectIntegral(integralRect).size;
 }