[Offlining] Updates the tab helper to use the async OfflinePageModel API

chrome/browser/android/tab_android.cc

 // Copyright 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 "chrome/browser/android/tab_android.h"
 
 #include <stddef.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
@@ skipping 745 matching lines @@
 
 jlong TabAndroid::GetBookmarkId(JNIEnv* env,
                                 const JavaParamRef<jobject>& obj,
                                 jboolean only_editable) {
   GURL url = dom_distiller::url_utils::GetOriginalUrlFromDistillerUrl(
       web_contents()->GetURL());
   Profile* profile = GetProfile();
 
   // If the url points to an offline page, then we need to get its original URL.
   if (offline_pages::OfflinePageUtils::IsOfflinePage(profile, url)) {
-    url = offline_pages::OfflinePageUtils::GetOnlineURLForOfflineURL(profile,
-                                                                     url);
+    url = offline_pages::OfflinePageUtils::MaybeGetOnlineURLForOfflineURL(
+        profile, url);
   }
 
   // Get all the nodes for |url| and sort them by date added.
   std::vector<const bookmarks::BookmarkNode*> nodes;
   bookmarks::ManagedBookmarkService* managed =
       ManagedBookmarkServiceFactory::GetForProfile(profile);
   bookmarks::BookmarkModel* model =
       BookmarkModelFactory::GetForProfile(profile);
 
   model->GetNodesByURL(url, &nodes);
@@ skipping 34 matching lines @@
       web_contents()->GetURL());
   return offline_pages::OfflinePageUtils::IsOfflinePage(GetProfile(), url);
 }
 
 ScopedJavaLocalRef<jstring> TabAndroid::GetOfflinePageOriginalUrl(
     JNIEnv* env,
     const JavaParamRef<jobject>& obj) {
   GURL url = dom_distiller::url_utils::GetOriginalUrlFromDistillerUrl(
       web_contents()->GetURL());
   GURL original_url =
-      offline_pages::OfflinePageUtils::GetOnlineURLForOfflineURL(GetProfile(),
-                                                                 url);
+      offline_pages::OfflinePageUtils::MaybeGetOnlineURLForOfflineURL(
+          GetProfile(), url);
   if (!original_url.is_valid())
     return ScopedJavaLocalRef<jstring>();
 
   return ScopedJavaLocalRef<jstring>(
       ConvertUTF8ToJavaString(env, original_url.spec()));
 }
 
 bool TabAndroid::HasPrerenderedUrl(JNIEnv* env,
                                    const JavaParamRef<jobject>& obj,
                                    const JavaParamRef<jstring>& url) {
@@ skipping 76 matching lines @@
 static void Init(JNIEnv* env, const JavaParamRef<jobject>& obj) {
   TRACE_EVENT0("native", "TabAndroid::Init");
   // This will automatically bind to the Java object and pass ownership there.
   new TabAndroid(env, obj);
 }
 
 // static
 bool TabAndroid::RegisterTabAndroid(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }