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..6eb7f4cb5a8f6beb193160e501f475d0a3571a90 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();
 
+  // Get the height of the native caption buttons in DIPs.

[Peter Kasting, 2017/04/26 17:19:52]

Nit: Get -> Returns (make comments declarative, not imperative)

+  static int GetCaptionButtonHeight();
+
   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_;