Do not submit: high level overview patch.

chrome/browser/android/tab_android.cc

 // Copyright (c) 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 "chrome/browser/browser_process.h"
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
 #include "chrome/browser/extensions/tab_helper.h"
 #include "chrome/browser/favicon/favicon_tab_helper.h"
 #include "chrome/browser/history/history_tab_helper.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/browser/password_manager/password_manager.h"
 #include "chrome/browser/password_manager/password_manager_delegate_impl.h"
 #include "chrome/browser/prerender/prerender_tab_helper.h"
 #include "chrome/browser/sessions/session_tab_helper.h"
 #include "chrome/browser/ssl/ssl_tab_helper.h"
 #include "chrome/browser/translate/translate_tab_helper.h"
 #include "chrome/browser/ui/alternate_error_tab_observer.h"
 #include "chrome/browser/ui/android/window_android_helper.h"
 #include "chrome/browser/ui/autofill/tab_autofill_manager_delegate.h"
 #include "chrome/browser/ui/blocked_content/blocked_content_tab_helper.h"
 #include "chrome/browser/ui/bookmarks/bookmark_tab_helper.h"
 #include "chrome/browser/ui/browser_tab_contents.h"
 #include "chrome/browser/ui/find_bar/find_tab_helper.h"
 #include "chrome/browser/ui/prefs/prefs_tab_helper.h"
-#include "chrome/browser/ui/sync/tab_contents_synced_tab_delegate.h"
 #include "chrome/browser/ui/tab_contents/core_tab_helper.h"
 #include "chrome/browser/ui/toolbar/toolbar_model_impl.h"
 #include "components/autofill/browser/autofill_external_delegate.h"
 #include "components/autofill/browser/autofill_manager.h"
 #include "content/public/browser/android/content_view_core.h"
 #include "content/public/browser/web_contents.h"
 #include "extensions/browser/view_type_utils.h"
 #include "jni/TabBase_jni.h"
 
 using content::WebContents;
@@ skipping 12 matching lines @@
   if (initialization_tag)
     return;
 
   // Mark as initialized.
   contents->SetUserData(&kTabHelpersInitializedUserDataKey,
                             new base::SupportsUserData::Data());
 
   // Set the view type.
   extensions::SetViewType(contents, extensions::VIEW_TYPE_TAB_CONTENTS);
 
-  // SessionTabHelper comes first because it sets up the tab ID, and other
-  // helpers may rely on that.
-  SessionTabHelper::CreateForWebContents(contents);
-
   AlternateErrorPageTabObserver::CreateForWebContents(contents);
   autofill::TabAutofillManagerDelegate::CreateForWebContents(contents);
   autofill::AutofillManager::CreateForWebContentsAndDelegate(
       contents,
       autofill::TabAutofillManagerDelegate::FromWebContents(contents),
       g_browser_process->GetApplicationLocale(),
       autofill::AutofillManager::ENABLE_AUTOFILL_DOWNLOAD_MANAGER);
   autofill::AutofillExternalDelegate::CreateForWebContentsAndManager(
       contents, autofill::AutofillManager::FromWebContents(contents));
   autofill::AutofillManager::FromWebContents(contents)->SetExternalDelegate(
       autofill::AutofillExternalDelegate::FromWebContents(contents));
   BlockedContentTabHelper::CreateForWebContents(contents);
   BookmarkTabHelper::CreateForWebContents(contents);
   CoreTabHelper::CreateForWebContents(contents);
   extensions::TabHelper::CreateForWebContents(contents);
   FaviconTabHelper::CreateForWebContents(contents);
   FindTabHelper::CreateForWebContents(contents);
   HistoryTabHelper::CreateForWebContents(contents);
   InfoBarService::CreateForWebContents(contents);
   PasswordManagerDelegateImpl::CreateForWebContents(contents);
   PasswordManager::CreateForWebContentsAndDelegate(
       contents, PasswordManagerDelegateImpl::FromWebContents(contents));
   PrefsTabHelper::CreateForWebContents(contents);
   prerender::PrerenderTabHelper::CreateForWebContents(contents);
   SSLTabHelper::CreateForWebContents(contents);
-  TabContentsSyncedTabDelegate::CreateForWebContents(contents);
   TabSpecificContentSettings::CreateForWebContents(contents);
   TranslateTabHelper::CreateForWebContents(contents);
   WindowAndroidHelper::CreateForWebContents(contents);
 }
 
 void TabAndroid::InitTabHelpers(WebContents* contents) {
   BrowserTabContents::AttachTabHelpers(contents);
 }
 
 WebContents* TabAndroid::InitWebContentsFromView(JNIEnv* env,
                                                  jobject content_view) {
   content::ContentViewCore* content_view_core =
       content::ContentViewCore::GetNativeContentViewCore(env, content_view);
   DCHECK(content_view_core);
   WebContents* web_contents = content_view_core->GetWebContents();
   DCHECK(web_contents);
-  InitTabHelpers(web_contents);
   return web_contents;
 }
 
-TabAndroid::TabAndroid(JNIEnv* env, jobject obj)
-    : tab_id_(-1),
-      weak_java_tab_(env, obj) {
+TabAndroid::TabAndroid(JNIEnv* env, jobject obj) : weak_java_tab_(env, obj) {
   Java_TabBase_setNativePtr(env, obj, reinterpret_cast<jint>(this));
 }
 
 TabAndroid::~TabAndroid() {
   JNIEnv* env = base::android::AttachCurrentThread();
   ScopedJavaLocalRef<jobject> obj = weak_java_tab_.get(env);
   if (obj.is_null())
     return;
 
   Java_TabBase_destroyBase(env, obj.obj());
 }
 
 content::WebContents* TabAndroid::GetWebContents() {
   return NULL;
 }
 
 ToolbarModel::SecurityLevel TabAndroid::GetSecurityLevel() {
   return ToolbarModelImpl::GetSecurityLevelForWebContents(GetWebContents());
 }
 
 void TabAndroid::RunExternalProtocolDialog(const GURL& url) {
 }
 
 bool TabAndroid::RegisterTabAndroid(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }