Rename MaximizeMode to TabletMode

ash/frame/header_view.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 ASH_FRAME_HEADER_VIEW_H_
 #define ASH_FRAME_HEADER_VIEW_H_
 
 #include <memory>
 
 #include "ash/ash_export.h"
@@ skipping 56 matching lines @@
   SkColor GetInactiveFrameColor() const;
 
   // views::View:
   void Layout() override;
   void OnPaint(gfx::Canvas* canvas) override;
   void ChildPreferredSizeChanged(views::View* child) override;
 
   // ShellObserver:
   void OnOverviewModeStarting() override;
   void OnOverviewModeEnded() override;
-  void OnMaximizeModeStarted() override;
-  void OnMaximizeModeEnded() override;
+  void OnTabletModeStarted() override;
+  void OnTabletModeEnded() override;
 
   FrameCaptionButtonContainerView* caption_button_container() {
     return caption_button_container_;
   }
 
   views::View* avatar_icon() const;
 
  private:
   // ImmersiveFullscreenControllerDelegate:
   void OnImmersiveRevealStarted() override;
@@ skipping 21 matching lines @@
   bool is_immersive_delegate_ = true;
 
   bool did_layout_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(HeaderView);
 };
 
 }  // namespace ash
 
 #endif  // ASH_FRAME_HEADER_VIEW_H_