Resize only the virtual viewport when the OSK triggers a resize.

content/public/android/java/src/org/chromium/content/browser/ContentViewClient.java

 // 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.
 
 package org.chromium.content.browser;
 
 import android.content.ActivityNotFoundException;
 import android.content.Context;
 import android.content.Intent;
 import android.view.KeyEvent;
@@ skipping 195 matching lines @@
     /**
      * ContentViewClient users can return a custom value to override the height of
      * the ContentView. By default, this method returns MeasureSpec.UNSPECIFIED, which
      * indicates that the value should not be overridden.
      *
      * @return The desired height of the ContentView.
      */
     public int getDesiredHeightMeasureSpec() {
         return UNSPECIFIED_MEASURE_SPEC;
     }
+
+    /**
+     * Returns the left system window inset in pixels. The system window inset represents the area
+     * of a full-screen window that is partially or fully obscured by the status bar, navigation
+     * bar, IME or other system windows.
+     * @return The left system window inset.
+     */
+    public int getSystemWindowInsetLeft() {
+        return 0;
+    }
+
+    /**
+     * Returns the top system window inset in pixels. The system window inset represents the area of
+     * a full-screen window that is partially or fully obscured by the status bar, navigation bar,
+     * IME or other system windows.
+     * @return The top system window inset.
+     */
+    public int getSystemWindowInsetTop() {
+        return 0;
+    }
+
+    /**
+     * Returns the right system window inset in pixels. The system window inset represents the area
+     * of a full-screen window that is partially or fully obscured by the status bar, navigation
+     * bar, IME or other system windows.
+     * @return The right system window inset.
+     */
+    public int getSystemWindowInsetRight() {
+        return 0;
+    }
+
+    /**
+     * Returns the bottom system window inset in pixels. The system window inset represents the area
+     * of a full-screen window that is partially or fully obscured by the status bar, navigation
+     * bar, IME or other system windows.
+     * @return The bottom system window inset.
+     */
+    public int getSystemWindowInsetBottom() {
+        return 0;
+    }
 }