Refactor OverlayPanel height calculations

chrome/android/java/src/org/chromium/chrome/browser/dom_distiller/ReaderModeManager.java

 // Copyright 2015 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.dom_distiller;
 
 import android.content.Context;
 import android.text.TextUtils;
 
 import org.chromium.base.CommandLine;
@@ skipping 385 matching lines @@
         mReaderModePanel.closePanel(reason, animate);
     }
 
     @Override
     public void recordTimeSpentInReader(long timeMs) {
         RecordHistogram.recordLongTimesHistogram("DomDistiller.Time.ViewingReaderModePanel",
                 timeMs, TimeUnit.MILLISECONDS);
     }
 
     @Override
-    public void onSizeChanged() {
+    public void onLayoutChanged() {
         if (isKeyboardShowing()) {
             mIsKeyboardShowing = true;
             closeReaderPanel(StateChangeReason.KEYBOARD_SHOWN, false);
         } else if (mIsKeyboardShowing) {
             mIsKeyboardShowing = false;
             requestReaderPanelShow(StateChangeReason.KEYBOARD_HIDDEN);
         }
     }
 
     /**
@@ skipping 204 matching lines @@
 
         boolean enabled = CommandLine.getInstance().hasSwitch(ChromeSwitches.ENABLE_DOM_DISTILLER)
                 && !CommandLine.getInstance().hasSwitch(
                         ChromeSwitches.DISABLE_READER_MODE_BOTTOM_BAR)
                 && !DeviceFormFactor.isTablet(context)
                 && DomDistillerTabUtils.isDistillerHeuristicsEnabled()
                 && !SysUtils.isLowEndDevice();
         return enabled;
     }
 }