Hide location bar on WebKit programmatic scroll.

components/web_contents_delegate_android/web_contents_delegate_android.cc

 // Copyright (c) 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.
 
 #include "components/web_contents_delegate_android/web_contents_delegate_android.h"
 
 #include <android/keycodes.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
@@ skipping 282 matching lines @@
 bool WebContentsDelegateAndroid::IsFullscreenForTabOrPending(
     const WebContents* web_contents) const {
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jobject> obj = GetJavaDelegate(env);
   if (obj.is_null())
     return false;
   return Java_WebContentsDelegateAndroid_isFullscreenForTabOrPending(
       env, obj.obj());
 }
 
+void WebContentsDelegateAndroid::RequestShowTopControls(
+    WebContents* web_contents, bool show) {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jobject> content_view_core =
+      content::ContentViewCore::FromWebContents(web_contents)->GetJavaObject();
+  if (content_view_core.is_null())
+    return;
+  ScopedJavaLocalRef<jobject> obj = GetJavaDelegate(env);
+  if (obj.is_null())
+    return;
+  Java_WebContentsDelegateAndroid_requestShowTopControls(
+      env, obj.obj(), content_view_core.obj(), show);
+}
+
+
 // ----------------------------------------------------------------------------
 // Native JNI methods
 // ----------------------------------------------------------------------------
 
 // Register native methods
 
 bool RegisterWebContentsDelegateAndroid(JNIEnv* env) {
   if (!HasClass(env, kWebContentsDelegateAndroidClassPath)) {
     DLOG(ERROR) << "Unable to find class WebContentsDelegateAndroid!";
     return false;
   }
   return RegisterNativesImpl(env);
 }
 
 }  // namespace components