services/ui: Create a proper component for the client-lib.

services/ui/public/cpp/window_manager_delegate.h

Index: services/ui/public/cpp/window_manager_delegate.h
diff --git a/services/ui/public/cpp/window_manager_delegate.h b/services/ui/public/cpp/window_manager_delegate.h
index fe3b72bc9ac904f41dea75c05c1d6f33ce168ab2..6611a247f2725fd4208265e6b9e8e91aba151457 100644
--- a/services/ui/public/cpp/window_manager_delegate.h
+++ b/services/ui/public/cpp/window_manager_delegate.h
@@ -13,6 +13,7 @@
 #include <vector>
 
 #include "base/callback_forward.h"
+#include "services/ui/public/cpp/ui_export.h"
 #include "services/ui/public/interfaces/cursor.mojom.h"
 #include "services/ui/public/interfaces/event_matcher.mojom.h"
 #include "services/ui/public/interfaces/window_manager_constants.mojom.h"
@@ -39,7 +40,7 @@ class Window;
 
 // See the mojom with the same name for details on the functions in this
 // interface.
-class WindowManagerClient {
+class UI_EXPORT WindowManagerClient {
  public:
   virtual void SetFrameDecorationValues(
       mojom::FrameDecorationValuesPtr values) = 0;
@@ -65,7 +66,7 @@ class WindowManagerClient {
 // Used by clients implementing a window manager.
 // TODO(sky): this should be called WindowManager, but that's rather confusing
 // currently.
-class WindowManagerDelegate {
+class UI_EXPORT WindowManagerDelegate {
  public:
   // Called once to give the delegate access to functions only exposed to
   // the WindowManager.