Remove unneeded JNI registrations.

chrome/browser/android/omnibox/omnibox_prerender.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 "omnibox_prerender.h"
 
 #include "base/android/jni_string.h"
 #include "base/logging.h"
 #include "chrome/browser/android/tab_android.h"
 #include "chrome/browser/autocomplete/autocomplete_match.h"
@@ skipping 15 matching lines @@
 }
 
 OmniboxPrerender::~OmniboxPrerender() {
 }
 
 static jlong Init(JNIEnv* env, jobject obj) {
   OmniboxPrerender* omnibox = new OmniboxPrerender(env, obj);
   return reinterpret_cast<intptr_t>(omnibox);
 }
 
-bool RegisterOmniboxPrerender(JNIEnv* env) {
-  return RegisterNativesImpl(env);
-}
-
 void OmniboxPrerender::Clear(JNIEnv* env,
                              jobject obj,
                              jobject j_profile_android) {
   Profile* profile = ProfileAndroid::FromProfileAndroid(j_profile_android);
   DCHECK(profile);
   if (!profile)
     return;
   AutocompleteActionPredictor* action_predictor =
       AutocompleteActionPredictorFactory::GetForProfile(profile);
   action_predictor->ClearTransitionalMatches();
@@ skipping 85 matching lines @@
   if (!web_contents)
     return;
   gfx::Rect container_bounds;
   web_contents->GetView()->GetContainerBounds(&container_bounds);
   predictors::AutocompleteActionPredictorFactory::GetForProfile(profile)->
       StartPrerendering(
           match.destination_url,
           web_contents->GetController().GetSessionStorageNamespaceMap(),
           container_bounds.size());
 }