Added pref for snapshot document collapsed state

chrome/browser/android/foreign_session_helper.h

 // 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.
 
 #ifndef CHROME_BROWSER_ANDROID_FOREIGN_SESSION_HELPER_H_
 #define CHROME_BROWSER_ANDROID_FOREIGN_SESSION_HELPER_H_
 
 #include <jni.h>
 
 #include "base/android/scoped_java_ref.h"
@@ skipping 14 matching lines @@
  public:
   explicit ForeignSessionHelper(Profile* profile);
   void Destroy(JNIEnv* env, jobject obj);
   jboolean IsTabSyncEnabled(JNIEnv* env, jobject obj);
   void SetOnForeignSessionCallback(JNIEnv* env, jobject obj, jobject callback);
   jboolean GetForeignSessions(JNIEnv* env, jobject obj, jobject result);
   jboolean OpenForeignSessionTab(JNIEnv* env,
                                  jobject obj,
                                  jstring session_tag,
                                  jint tab_id);
-  void SetForeignSessionCollapsed(JNIEnv* env,
-                                  jobject obj,
-                                  jstring session_tag,
-                                  jboolean is_collapsed);
-  jboolean GetForeignSessionCollapsed(JNIEnv* env,
-                                      jobject obj,
-                                      jstring session_tag);
   void DeleteForeignSession(JNIEnv* env, jobject obj, jstring session_tag);
 
   // NotificationObserver implemenation
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
   static bool RegisterForeignSessionHelper(JNIEnv* env);
 
  private:
   virtual ~ForeignSessionHelper();
 
   Profile* profile_;  // weak
   base::android::ScopedJavaGlobalRef<jobject> callback_;
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(ForeignSessionHelper);
 };
 
 #endif  // CHROME_BROWSER_ANDROID_FOREIGN_SESSION_HELPER_H_