Makes windowmanager draw non-client area

components/mus/example/wm/window_manager_impl.cc

Index: components/mus/example/wm/window_manager_impl.cc
diff --git a/components/mus/example/wm/window_manager_impl.cc b/components/mus/example/wm/window_manager_impl.cc
index 9525f2602f3d1285e1ec17b92d50920d189a63ea..603947264fb09b2034e4179279ceed5ec6b67c6a 100644
--- a/components/mus/example/wm/window_manager_impl.cc
+++ b/components/mus/example/wm/window_manager_impl.cc
@@ -5,6 +5,7 @@
 #include "components/mus/example/wm/window_manager_impl.h"
 
 #include "components/mus/example/wm/move_loop.h"
+#include "components/mus/example/wm/non_client_frame_controller.h"
 #include "components/mus/example/wm/property_util.h"
 #include "components/mus/example/wm/public/interfaces/container.mojom.h"
 #include "components/mus/example/wm/window_manager_application.h"
@@ -14,6 +15,7 @@
 #include "components/mus/public/cpp/window_property.h"
 #include "components/mus/public/cpp/window_tree_connection.h"
 #include "components/mus/public/interfaces/input_events.mojom.h"
+#include "mojo/application/public/cpp/application_impl.h"
 #include "mojo/converters/geometry/geometry_type_converters.h"
 
 namespace {
@@ -73,6 +75,9 @@ void WindowManagerImpl::OpenWindow(
   child_window->Embed(client.Pass());
   child_window->AddObserver(this);
 
+  // NonClientFrameController deletes itself when the window is destroyed.
+  new NonClientFrameController(state_->app()->shell(), child_window);
+
   state_->IncrementWindowCount();
 }
 
@@ -105,18 +110,36 @@ void WindowManagerImpl::SetShowState(
   callback.Run(mus::mojom::WINDOW_MANAGER_ERROR_CODE_SUCCESS);
 }
 
-void WindowManagerImpl::GetDisplays(const GetDisplaysCallback& callback) {
-  mojo::Array<mus::mojom::DisplayPtr> displays(1);
-  displays[0] = mus::mojom::Display::New();
-  displays[0]->id = 2001;
-  displays[0]->bounds = mojo::Rect::New();
-  displays[0]->bounds->y = 0;
-  displays[0]->bounds->width = state_->root()->bounds().width();
-  displays[0]->bounds->height = state_->root()->bounds().width();
-  displays[0]->work_area = displays[0]->bounds.Clone();
-  displays[0]->device_pixel_ratio =
+void WindowManagerImpl::GetConfig(const GetConfigCallback& callback) {
+  mus::mojom::WindowManagerConfigPtr config(
+      mus::mojom::WindowManagerConfig::New());
+  config->displays = mojo::Array<mus::mojom::DisplayPtr>::New(1);
+  config->displays[0] = mus::mojom::Display::New();
+  config->displays[0]->id = 2001;
+  config->displays[0]->bounds = mojo::Rect::New();
+  config->displays[0]->bounds->y = 0;
+  config->displays[0]->bounds->width = state_->root()->bounds().width();
+  config->displays[0]->bounds->height = state_->root()->bounds().width();
+  config->displays[0]->work_area = config->displays[0]->bounds.Clone();
+  config->displays[0]->device_pixel_ratio =
       state_->root()->viewport_metrics().device_pixel_ratio;
-  callback.Run(displays.Pass());
+
+  // The insets are roughly what is needed by CustomFrameView. The expectation
+  // is at some point we'll write our own NonClientFrameView and get the insets
+  // from it.
+  config->normal_client_area_insets = mojo::Insets::New();
+  config->normal_client_area_insets->top = 23;
+  config->normal_client_area_insets->left = 5;
+  config->normal_client_area_insets->right = 5;
+  config->normal_client_area_insets->bottom = 5;
+
+  config->maximized_client_area_insets = mojo::Insets::New();
+  config->maximized_client_area_insets->top = 21;
+  config->maximized_client_area_insets->left = 0;
+  config->maximized_client_area_insets->right = 0;
+  config->maximized_client_area_insets->bottom = 0;
+
+  callback.Run(config.Pass());
 }
 
 void WindowManagerImpl::OnWindowDestroyed(mus::Window* window) {