Gray top border for keyboard accessory.

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 2db31b695d7240e4c36bc8eaefda641daf946141..2bc65ba9641c19936a8abbc8d4ac9b6599d99be1 100644
--- a/ui/android/java/src/org/chromium/ui/base/WindowAndroid.java
+++ b/ui/android/java/src/org/chromium/ui/base/WindowAndroid.java
@@ -87,6 +87,7 @@ public class WindowAndroid {
     private View mAnimationPlaceholderView;
 
     private ViewGroup mKeyboardAccessoryView;
+    private View mKeyboardAccessoryShadow;
 
     private boolean mIsKeyboardShowing = false;
 
@@ -486,12 +487,30 @@ public class WindowAndroid {
     }
 
     /**
+     * Sets the keyboard accessory shadow.
+     * @param view This view overlays the bottom of the content area. The view is half transparent
+     *             and contains a gradient, which creates the appearance a shadow from the keyboard
+     *             accessory view. The view should be visible only in conjunction with the keyboard
+     *             accessory.
+     */
+    public void setKeyboardAccessoryShadow(View view) {
+        mKeyboardAccessoryShadow = view;
+    }
+
+    /**
      * {@see setKeyboardAccessoryView(ViewGroup)}.
      */
     public ViewGroup getKeyboardAccessoryView() {
         return mKeyboardAccessoryView;
     }
 
+    /**
+     * {@see setKeyboardAccessoryShadow(View)}.
+     */
+    public View getKeyboardAccessoryShadow() {
+        return mKeyboardAccessoryShadow;
+    }
+
     protected void registerKeyboardVisibilityCallbacks() {
     }