Added pref for snapshot document collapsed state

chrome/browser/android/foreign_session_helper.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 "chrome/browser/android/foreign_session_helper.h"
 
 #include <jni.h>
 
 #include "base/android/jni_string.h"
 #include "base/prefs/scoped_user_pref_update.h"
@@ skipping 269 matching lines @@
   int selected_index = tab->normalized_navigation_index();
   new_web_contents->GetController().Restore(
       selected_index,
       content::NavigationController::RESTORE_LAST_SESSION_EXITED_CLEANLY,
       &entries);
   tab_model->CreateTab(new_web_contents);
 
   return true;
 }
 
-void ForeignSessionHelper::SetForeignSessionCollapsed(JNIEnv* env, jobject obj,
-                                                      jstring session_tag,
-                                                      jboolean is_collapsed) {
-  // Store session tags for collapsed sessions in a preference so that the
-  // collapsed state persists.
-  PrefService* prefs = profile_->GetPrefs();
-  DictionaryPrefUpdate update(prefs, prefs::kNtpCollapsedForeignSessions);
-  if (is_collapsed)
-    update.Get()->SetBoolean(ConvertJavaStringToUTF8(env, session_tag), true);
-  else
-    update.Get()->Remove(ConvertJavaStringToUTF8(env, session_tag), NULL);
-}
-
-jboolean ForeignSessionHelper::GetForeignSessionCollapsed(JNIEnv* env,
-                                                          jobject obj,
-                                                          jstring session_tag) {
-  const DictionaryValue* dict = profile_->GetPrefs()->GetDictionary(
-      prefs::kNtpCollapsedForeignSessions);
-  return dict && dict->HasKey(ConvertJavaStringToUTF8(env, session_tag));
-}
-
 void ForeignSessionHelper::DeleteForeignSession(JNIEnv* env, jobject obj,
                                                 jstring session_tag) {
   SessionModelAssociator* associator = GetSessionModelAssociator(profile_);
   if (associator)
     associator->DeleteForeignSession(ConvertJavaStringToUTF8(env, session_tag));
 }
 
 // static
 bool ForeignSessionHelper::RegisterForeignSessionHelper(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }