Added pref for snapshot document collapsed state

chrome/browser/android/new_tab_page_prefs.h

Index: chrome/browser/android/new_tab_page_prefs.h
diff --git a/chrome/browser/android/new_tab_page_prefs.h b/chrome/browser/android/new_tab_page_prefs.h
new file mode 100644
index 0000000000000000000000000000000000000000..99b6a093dee959f64099e4483044234ff08d7db2
--- /dev/null
+++ b/chrome/browser/android/new_tab_page_prefs.h
@@ -0,0 +1,48 @@
+// 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_NEW_TAB_PAGE_PREFS_H_
+#define CHROME_BROWSER_ANDROID_NEW_TAB_PAGE_PREFS_H_
+
+#include <jni.h>
+
+#include "chrome/browser/profiles/profile.h"
+
+class NewTabPagePrefs {
+ public:
+  explicit NewTabPagePrefs(Profile* profile);
+  void Destroy(JNIEnv* env, jobject obj);
+
+  jboolean GetSnapshotDocumentCollapsed(JNIEnv* env, jobject obj);
+  void SetSnapshotDocumentCollapsed(JNIEnv* env,
+                                    jobject obj,
+                                    jboolean is_collapsed);
+
+  jboolean GetRecentlyClosedTabsCollapsed(JNIEnv* env, jobject obj);
+  void SetRecentlyClosedTabsCollapsed(JNIEnv* env,
+                                      jobject obj,
+                                      jboolean is_collapsed);
+
+  jboolean GetSyncPromoCollapsed(JNIEnv* env, jobject obj);
+  void SetSyncPromoCollapsed(JNIEnv* env,
+                             jobject obj,
+                             jboolean is_collapsed);
+
+  jboolean GetForeignSessionCollapsed(JNIEnv* env,
+                                      jobject obj,
+                                      jstring session_tag);
+  void SetForeignSessionCollapsed(JNIEnv* env, jobject obj,
+                                  jstring session_tag,
+                                  jboolean is_collapsed);
+
+  static bool RegisterNewTabPagePrefs(JNIEnv* env);
+  static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
+ private:
+  virtual ~NewTabPagePrefs();
+
+  Profile* profile_;  // weak
+  DISALLOW_COPY_AND_ASSIGN(NewTabPagePrefs);
+};
+
+#endif  // CHROME_BROWSER_ANDROID_NEW_TAB_PAGE_PREFS_H_