(fix landed) Reland of name MaximizeMode to TabletMode

components/exo/keyboard.h

Index: components/exo/keyboard.h
diff --git a/components/exo/keyboard.h b/components/exo/keyboard.h
index 98c4a4a9692bb3861fb868ccb530541be320b1c1..1232d5c8e31ecfbb628bf195da5e63f9cc32b01b 100644
--- a/components/exo/keyboard.h
+++ b/components/exo/keyboard.h
@@ -27,7 +27,7 @@
 class Keyboard : public ui::EventHandler,
                  public WMHelper::FocusObserver,
                  public WMHelper::InputDeviceEventObserver,
-                 public WMHelper::MaximizeModeObserver,
+                 public WMHelper::TabletModeObserver,
                  public SurfaceObserver {
  public:
   explicit Keyboard(KeyboardDelegate* delegate);
@@ -50,10 +50,10 @@
   // Overridden from ui::InputDeviceEventObserver:
   void OnKeyboardDeviceConfigurationChanged() override;
 
-  // Overridden from WMHelper::MaximizeModeObserver:
-  void OnMaximizeModeStarted() override;
-  void OnMaximizeModeEnding() override;
-  void OnMaximizeModeEnded() override;
+  // Overridden from WMHelper::TabletModeObserver:
+  void OnTabletModeStarted() override;
+  void OnTabletModeEnding() override;
+  void OnTabletModeEnded() override;
 
  private:
   // Returns the effective focus for |window|.