Android - Introduce "keyboard accessory" for Autofill suggestions.

ui/android/java/src/org/chromium/ui/base/WindowAndroid.java

Index: ui/android/java/src/org/chromium/ui/base/WindowAndroid.java
diff --git a/ui/android/java/src/org/chromium/ui/base/WindowAndroid.java b/ui/android/java/src/org/chromium/ui/base/WindowAndroid.java
index 0bf7bd1ade48d9faf55f2c80dffaa5e696475318..31c43a01a66cbeb11aedb2027dab667e172708a3 100644
--- a/ui/android/java/src/org/chromium/ui/base/WindowAndroid.java
+++ b/ui/android/java/src/org/chromium/ui/base/WindowAndroid.java
@@ -16,6 +16,7 @@ import android.os.Bundle;
 import android.util.Log;
 import android.util.SparseArray;
 import android.view.View;
+import android.view.ViewGroup;
 import android.widget.Toast;
 
 import org.chromium.base.CalledByNative;
@@ -55,6 +56,8 @@ public class WindowAndroid {
     private HashSet<Animator> mAnimationsOverContent = new HashSet<Animator>();
     private View mAnimationPlaceholderView;
 
+    private ViewGroup mKeyboardAccessoryView;
+
     private final VSyncMonitor.Listener mVSyncListener = new VSyncMonitor.Listener() {
         @Override
         public void onVSync(VSyncMonitor monitor, long vsyncTimeMicros) {
@@ -326,6 +329,22 @@ public class WindowAndroid {
     }
 
     /**
+     * Sets the keyboard accessory view.
+     * @param view This view sits at the bottom of the content area and pushes the content up rather
+     *             than overlaying it. Currently used as a container for Autofill suggestions.
+     */
+    public void setKeyboardAccessoryView(ViewGroup view) {
+        mKeyboardAccessoryView = view;
+    }
+
+    /**
+     * {@see setKeyboardAccessoryView(ViewGroup)}.
+     */
+    public ViewGroup getKeyboardAccessoryView() {
+        return mKeyboardAccessoryView;
+    }
+
+    /**
      * Start a post-layout animation on top of web content.
      *
      * By default, Android optimizes what it shows on top of SurfaceViews (saves power).