[Offline Pages] Removes the deprecated IsOfflinePages synthetic flag since no uses of it remain.

chrome/browser/android/offline_pages/offline_page_bridge.cc

 // Copyright 2015 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/offline_pages/offline_page_bridge.h"
 
 #include <memory>
 #include <set>
 #include <string>
 #include <utility>
@@ skipping 180 matching lines @@
       base::android::ToJavaLongArray(env, update_request_ids);
   ScopedJavaLocalRef<jintArray> j_result_codes =
       base::android::ToJavaIntArray(env, update_request_results);
 
   Java_RequestsRemovedCallback_onResult(env, j_callback_obj, j_result_ids,
                                         j_result_codes);
 }
 
 }  // namespace
 
-static jboolean IsOfflinePagesEnabled(JNIEnv* env,
-                                          const JavaParamRef<jclass>& clazz) {
-  return offline_pages::IsOfflinePagesEnabled();
-}
-
 static jboolean IsOfflineBookmarksEnabled(JNIEnv* env,
                                           const JavaParamRef<jclass>& clazz) {
   return offline_pages::IsOfflineBookmarksEnabled();
 }
 
 static jboolean IsBackgroundLoadingEnabled(JNIEnv* env,
                                            const JavaParamRef<jclass>& clazz) {
   return offline_pages::IsOfflinePagesBackgroundLoadingEnabled();
 }
 
@@ skipping 323 matching lines @@
       env, ConvertUTF8ToJavaString(env, client_id.name_space),
       ConvertUTF8ToJavaString(env, client_id.id));
 }
 
 bool RegisterOfflinePageBridge(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace android
 }  // namespace offline_pages