Ensure History > Recent Tabs restore preserves window disposition.

chrome/browser/ui/android/tab_model/android_live_tab_context.h

 // Copyright 2016 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_UI_ANDROID_TAB_MODEL_ANDROID_LIVE_TAB_CONTEXT_H_
 #define CHROME_BROWSER_UI_ANDROID_TAB_MODEL_ANDROID_LIVE_TAB_CONTEXT_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 15 matching lines @@
 
   // Overridden from LiveTabContext:
   void ShowBrowserWindow() override;
   const SessionID& GetSessionID() const override;
   int GetTabCount() const override;
   int GetSelectedIndex() const override;
   std::string GetAppName() const override;
   sessions::LiveTab* GetLiveTabAt(int index) const override;
   sessions::LiveTab* GetActiveLiveTab() const override;
   bool IsTabPinned(int index) const override;
+  const gfx::Rect GetBounds() const override;
+  ui::WindowShowState GetShowState() const override;
+  std::string GetWorkspace() const override;
   sessions::LiveTab* AddRestoredTab(
       const std::vector<sessions::SerializedNavigationEntry>& navigations,
       int tab_index,
       int selected_navigation,
       const std::string& extension_app_id,
       bool select,
       bool pin,
       bool from_last_session,
       const sessions::PlatformSpecificTabData* storage_namespace,
       const std::string& user_agent_override) override;
@@ skipping 11 matching lines @@
   static sessions::LiveTabContext* FindContextWithID(
       SessionID::id_type desired_id);
 
  private:
   TabModel* tab_model_;
   DISALLOW_COPY_AND_ASSIGN(AndroidLiveTabContext);
 };
 
 
 #endif  // CHROME_BROWSER_UI_ANDROID_TAB_MODEL_ANDROID_LIVE_TAB_CONTEXT_H_