[Android] Don't increase app menu height when at bottom pre-N

chrome/android/java/src/org/chromium/chrome/browser/appmenu/AppMenu.java

 // Copyright 2011 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.
 
 package org.chromium.chrome.browser.appmenu;
 
 import android.animation.Animator;
 import android.animation.Animator.AnimatorListener;
 import android.animation.AnimatorSet;
 import android.annotation.SuppressLint;
@@ skipping 422 matching lines @@
     public Menu getMenu() {
         return mMenu;
     }
 
     private void setMenuHeight(int numMenuItems, Rect appDimensions,
             int screenHeight, Rect padding, int footerHeight) {
         assert mPopup.getAnchorView() != null;
         View anchorView = mPopup.getAnchorView();
         anchorView.getLocationInWindow(mTempLocation);
         int anchorViewY = mTempLocation[1] - appDimensions.top;
-        if (isAnchorAtBottom(anchorView, appDimensions)) {
+
+        // The framework's PopupWindow positioning changed between N and M. Pre-N, increasing the
+        // height here causes the menu to be cut-off in landscape mode. See crbug.com/722105.
+        // TODO(twellington): stop using ListPopupWindow for the app menu.
+        if (isAnchorAtBottom(anchorView, appDimensions)
+                && Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
             anchorViewY += mPopup.getAnchorView().getHeight();
         }
+
         int anchorViewImpactHeight = mIsByPermanentButton ? anchorView.getHeight() : 0;
 
         // Set appDimensions.height() for abnormal anchorViewLocation.
         if (anchorViewY > screenHeight) {
             anchorViewY = appDimensions.height();
         }
         int availableScreenSpace = Math.max(
                 anchorViewY, appDimensions.height() - anchorViewY - anchorViewImpactHeight);
 
         availableScreenSpace -= padding.bottom + footerHeight;
@@ skipping 34 matching lines @@
                 } else {
                     builder.with((Animator) animatorObject);
                 }
             }
         }
 
         mMenuItemEnterAnimator.addListener(mAnimationHistogramRecorder);
         mMenuItemEnterAnimator.start();
     }
 }