Rename GetPreferredSize to CalculatePreferredSize in ash/

ash/frame/caption_buttons/frame_caption_button.h

Index: ash/frame/caption_buttons/frame_caption_button.h
diff --git a/ash/frame/caption_buttons/frame_caption_button.h b/ash/frame/caption_buttons/frame_caption_button.h
index d92afea9c6fc7ac6737c81f96f458f0d34f1b67b..9b80522e2f5ef92a75bc0e11a3a29166acdc2fe6 100644
--- a/ash/frame/caption_buttons/frame_caption_button.h
+++ b/ash/frame/caption_buttons/frame_caption_button.h
@@ -47,7 +47,6 @@ class ASH_EXPORT FrameCaptionButton : public views::CustomButton {
   void SetAlpha(int alpha);
 
   // views::View overrides:
-  gfx::Size GetPreferredSize() const override;
   const char* GetClassName() const override;
   void OnPaint(gfx::Canvas* canvas) override;
 
@@ -59,8 +58,6 @@ class ASH_EXPORT FrameCaptionButton : public views::CustomButton {
 
   CaptionButtonIcon icon() const { return icon_; }
 
-  void set_size(const gfx::Size& size) { size_ = size; }
-
  protected:
   // views::CustomButton override:
   void OnGestureEvent(ui::GestureEvent* event) override;
@@ -73,9 +70,6 @@ class ASH_EXPORT FrameCaptionButton : public views::CustomButton {
   // The button's current icon.
   CaptionButtonIcon icon_;
 
-  // The size of the button.
-  gfx::Size size_;
-
   // Whether the button should be painted as active.
   bool paint_as_active_;