Renames WindowManagerConfig to FrameDecorationValues and moves to Display

components/mus/public/interfaces/window_manager_constants.mojom

Index: components/mus/public/interfaces/window_manager_constants.mojom
diff --git a/components/mus/public/interfaces/window_manager_constants.mojom b/components/mus/public/interfaces/window_manager_constants.mojom
index 9b86fa21cc05d5a0fd7aaf063b87c6b3f8a7c293..e704cbbbe6d4f7e96eec0d4e7f704bc2dcb926ab 100644
--- a/components/mus/public/interfaces/window_manager_constants.mojom
+++ b/components/mus/public/interfaces/window_manager_constants.mojom
@@ -31,13 +31,21 @@ const int32 kResizeBehaviorCanResize = 1;
 const int32 kResizeBehaviorCanMaximize = 2;
 const int32 kResizeBehaviorCanMinimize = 4;
 
+struct FrameDecorationValues {
+  mojo.Insets normal_client_area_insets;
+  mojo.Insets maximized_client_area_insets;
+  // Max width needed to display the buttons on the title bar. The buttons are
+  // aligned to the trailing edge of the titlebar.
+  // TODO(sky): this API is very narrow, and assumes a particular config.
+  uint32 max_title_bar_button_width;
+};
+
 enum TouchSupport {
   UNKNOWN,
   AVAILABLE,
   UNAVAILABLE,
 };
 
-// TODO(sky): move this to display.mojom
 struct Display {
   int64 id;
   mojo.Rect bounds;
@@ -46,6 +54,7 @@ struct Display {
   Rotation rotation;
   TouchSupport touch_support;
   bool is_primary;
+  FrameDecorationValues frame_decoration_values;

[Ben Goodger (Google), 2016/01/26 19:18:03]

It does strike me as a little odd that this very UI/WM-specific detail is
sitting here on the lower level support struct for a display. But right now it's
probably weirder to have it floating around by itself, so I guess I'm OK with
it...

 };
 
 enum WindowType {