Add GetCaptionButtonHeightInDIPs() method

chrome/browser/ui/views/profiles/win10_native_avatar_button.cc

Index: chrome/browser/ui/views/profiles/win10_native_avatar_button.cc
diff --git a/chrome/browser/ui/views/profiles/win10_native_avatar_button.cc b/chrome/browser/ui/views/profiles/win10_native_avatar_button.cc
index 94fe951eee170f5a24094fd6012d7bc9c36650a8..82a1a0b79e57a94440464eb2e11aba262eb2be9b 100644
--- a/chrome/browser/ui/views/profiles/win10_native_avatar_button.cc
+++ b/chrome/browser/ui/views/profiles/win10_native_avatar_button.cc
@@ -5,6 +5,7 @@
 #include "chrome/browser/ui/views/profiles/win10_native_avatar_button.h"
 
 #include "chrome/app/vector_icons/vector_icons.h"
+#include "chrome/browser/ui/views/frame/minimize_button_metrics_win.h"
 #include "chrome/browser/ui/views/tabs/tab_strip.h"
 #include "ui/gfx/paint_vector_icon.h"
 #include "ui/views/animation/flood_fill_ink_drop_ripple.h"
@@ -51,8 +52,7 @@ gfx::Size Win10NativeAvatarButton::GetPreferredSize() const {
   gfx::Size ps = views::MenuButton::GetPreferredSize();
   ps.set_width(
       std::min(std::max(ps.width(), kButtonMinWidth), kButtonMaxWidth));
-  // TODO(emx): get the proper height here - see http://crrev/2833363002
-  ps.set_height(30);
+  ps.set_height(MinimizeButtonMetrics::GetCaptionButtonHeightInDIPs());
   return ps;
 }