Hide location bar on WebKit programmatic scroll.

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

Index: content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java b/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
index ebcffbd051f78b5c348ce26f825e970835312c3c..2c70a41015a6a1bee2f7d6c32e7bd6e4d08e0b99 100644
--- a/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
+++ b/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
@@ -2470,6 +2470,14 @@ public class ContentViewCore implements MotionEventDelegate, NavigationClient {
         nativeEnableHidingTopControls(mNativeContentViewCore, enable);
     }
 
+
+    /**
+     * Show or hide the top controls.
+     */
+    public void showTopControls(boolean show) {
+        nativeShowTopControls(mNativeContentViewCore, show);
+    }
+
     /**
      * @See android.webkit.WebView#pageDown(boolean)
      */
@@ -2736,6 +2744,8 @@ public class ContentViewCore implements MotionEventDelegate, NavigationClient {
     private native void nativeExitFullscreen(int nativeContentViewCoreImpl);
     private native void nativeEnableHidingTopControls(
             int nativeContentViewCoreImpl, boolean enable);
+    private native void nativeShowTopControls(
+            int nativeContentViewCoreImpl, boolean show);
 
     private native void nativeShowImeIfNeeded(int nativeContentViewCoreImpl);