Handle online and offline redirects via interceptor and offline scheme

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_string.h"
@@ skipping 783 matching lines @@
   GURL url = dom_distiller::url_utils::GetOriginalUrlFromDistillerUrl(
       web_contents()->GetURL());
   return offline_pages::OfflinePageUtils::HasOfflinePageForOnlineURL(
       GetProfile(), url);
 }
 
 jboolean TabAndroid::IsOfflinePage(JNIEnv* env,
                                    const JavaParamRef<jobject>& obj) {
   GURL url = dom_distiller::url_utils::GetOriginalUrlFromDistillerUrl(
       web_contents()->GetURL());
-  return offline_pages::OfflinePageUtils::IsOfflinePage(GetProfile(), url);
+  return url.SchemeIs(chrome::kOfflinePageScheme);
 }
 
 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::MaybeGetOnlineURLForOfflineURL(
-          GetProfile(), url);
-  if (!original_url.is_valid())
+  if (!url.SchemeIs(chrome::kOfflinePageScheme))
+    return ScopedJavaLocalRef<jstring>();
+  GURL original_url(url.GetContent());
+  if (!original_url.is_valid() || !original_url.SchemeIsHTTPOrHTTPS())
     return ScopedJavaLocalRef<jstring>();
 
   return ScopedJavaLocalRef<jstring>(
       ConvertUTF8ToJavaString(env, original_url.spec()));
 }
 
 bool TabAndroid::HasPrerenderedUrl(JNIEnv* env,
                                    const JavaParamRef<jobject>& obj,
                                    const JavaParamRef<jstring>& url) {
   GURL gurl(base::android::ConvertJavaStringToUTF8(env, url));
@@ skipping 75 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);
 }