Add GetCaptionButtonHeightInDIPs() method

chrome/browser/ui/views/frame/minimize_button_metrics_win.h

Index: chrome/browser/ui/views/frame/minimize_button_metrics_win.h
diff --git a/chrome/browser/ui/views/frame/minimize_button_metrics_win.h b/chrome/browser/ui/views/frame/minimize_button_metrics_win.h
index c3a6d3f34bbf82a68d207684750dc51576c1e4e1..86d08a4b5f9da28c860b3db691d96cb67eabb6a9 100644
--- a/chrome/browser/ui/views/frame/minimize_button_metrics_win.h
+++ b/chrome/browser/ui/views/frame/minimize_button_metrics_win.h
@@ -18,6 +18,9 @@ class MinimizeButtonMetrics {
   MinimizeButtonMetrics();
   ~MinimizeButtonMetrics();
 
+  // Returns the height of the native caption buttons in DIPs.
+  static int GetCaptionButtonHeightInDIPs();
+
   void Init(HWND hwnd);
 
   // Obtain the X offset of the native minimize button. Since Windows can lie
@@ -48,7 +51,7 @@ class MinimizeButtonMetrics {
   // Static cache of |cached_minimize_button_x_delta_|.
   static int last_cached_minimize_button_x_delta_;
 
-  // Static cache of offset value representing the different between
+  // Static cache of offset value representing the difference between
   // DWMWA_CAPTION_BUTTON_BOUNDS and WM_GETTITLEBARINFOEX
   static int button_bounds_position_offset_;