Refactor ContentViewClient (3/6)

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

Index: ui/android/java/src/org/chromium/ui/base/ViewAndroidDelegate.java
diff --git a/ui/android/java/src/org/chromium/ui/base/ViewAndroidDelegate.java b/ui/android/java/src/org/chromium/ui/base/ViewAndroidDelegate.java
index 82d09ea85aba6095b160d67ec5238c93b1586bb1..9b87ac26350ba9465148ef6b8bf73ce6a577a298 100644
--- a/ui/android/java/src/org/chromium/ui/base/ViewAndroidDelegate.java
+++ b/ui/android/java/src/org/chromium/ui/base/ViewAndroidDelegate.java
@@ -105,6 +105,33 @@ public abstract class ViewAndroidDelegate {
     }
 
     /**
+     * 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;
+    }
+
+    @CalledByNative
+    public void onBackgroundColorChanged(int color) { }
+
+    /**
+     * Notifies the client of the position of the top controls.
+     * @param topControlsOffsetY The Y offset of the top controls in physical pixels.
+     * @param topContentOffsetY The Y offset of the content in physical pixels.
+     */
+    public void onTopControlsChanged(float topControlsOffsetY, float topContentOffsetY) { }
+
+    /**
+     * Notifies the client of the position of the bottom controls.
+     * @param bottomControlsOffsetY The Y offset of the bottom controls in physical pixels.
+     * @param bottomContentOffsetY The Y offset of the content in physical pixels.
+     */
+    public void onBottomControlsChanged(float bottomControlsOffsetY, float bottomContentOffsetY) { }
+
+    /**
      * @return container view that the anchor views are added to. May be null.
      */
     public abstract ViewGroup getContainerView();