Remove the keyboard from the browser demo.

examples/window_manager/window_manager.mojom

Index: examples/window_manager/window_manager.mojom
diff --git a/examples/window_manager/window_manager.mojom b/examples/window_manager/window_manager.mojom
index 391e35ec3aa7838a83f1d58e8d8b1308356c057c..7f4ea65b832c4ae190f89cb9c14569c84b2a921a 100644
--- a/examples/window_manager/window_manager.mojom
+++ b/examples/window_manager/window_manager.mojom
@@ -8,13 +8,4 @@ import "mojo/services/geometry/public/interfaces/geometry.mojom";
 
 interface IWindowManager {
   CloseWindow(uint32 node_id);
-
-  // Shows the keyboard for the specified view. |bounds| is the bounds of the
-  // view that is showing focus. |bounds| is relative to the bounds of the node.
-  // Events from the keyboard are routed to the view with id |view_id|.
-  ShowKeyboard(uint32 view_id, mojo.Rect bounds);
-
-  // Hides the keyboard. This is ignored if |view_id| is not the view that was
-  // last passed to ShowKeyboard().
-  HideKeyboard(uint32 view_id);
 };