Remove unneeded JNI registrations.

chrome/browser/android/uma_bridge.cc

 // Copyright 2013 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 "chrome/browser/android/uma_bridge.h"
-
 #include <jni.h>
 
 #include "content/public/browser/user_metrics.h"
 #include "jni/UmaBridge_jni.h"
 
 using base::UserMetricsAction;
 using content::RecordAction;
 using content::RecordComputedAction;
 
 static void RecordMenuShow(JNIEnv*, jclass) {
@@ skipping 11 matching lines @@
       RecordAction(UserMetricsAction("MobileUsingMenuByHwButtonTap"));
     }
   } else {
     if (is_dragging) {
       RecordAction(UserMetricsAction("MobileUsingMenuBySwButtonDragging"));
     } else {
       RecordAction(UserMetricsAction("MobileUsingMenuBySwButtonTap"));
     }
   }
 }
-
-namespace chrome {
-namespace android {
-
-// Register native methods
-bool RegisterUmaBridge(JNIEnv* env) {
-  return RegisterNativesImpl(env);
-}
-
-}  // namespace android
-}  // namespace chrome