mus: Remove ViewportMetrics from mojom.

components/mus/public/interfaces/window_tree.mojom

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 module mus.mojom;
 
 import "cc/ipc/surface_id.mojom";
 import "components/mus/public/interfaces/compositor_frame.mojom";
 import "components/mus/public/interfaces/cursor.mojom";
 import "components/mus/public/interfaces/event_matcher.mojom";
 import "components/mus/public/interfaces/input_events.mojom";
 import "components/mus/public/interfaces/mus_constants.mojom";
 import "components/mus/public/interfaces/window_manager.mojom";
 import "components/mus/public/interfaces/window_manager_constants.mojom";
 import "ui/gfx/geometry/mojo/geometry.mojom";
 import "ui/mojo/ime/text_input_state.mojom";
 
-struct ViewportMetrics {
-  mojo.Size size_in_pixels;
-  // A value of 0 indicates the real value is not yet available.
-  float device_pixel_ratio = 0.0;
-};
-
 struct WindowData {
   uint32 parent_id;
   uint32 window_id;
   mojo.Rect bounds;
   map<string, array<uint8>> properties;
   // True if this window is visible. The window may not be drawn on screen (see
   // OnWindowParentDrawnStateChanged() for details).
   bool visible;
   int64 display_id;
 };
@@ skipping 368 matching lines @@
   // See description of WindowManager for details.
   GetWindowManager(associated WindowManager& internal);
 };
 
 // Mus provides this interface as a way for clients to connect and obtain a
 // WindowTree handle with a supplied WindowTreeClient handle. The
 // WindowTreeClient has no roots, use NewTopLevelWindow() to create one.
 interface WindowTreeFactory {
   CreateWindowTree(WindowTree& tree_request, WindowTreeClient client);
 };