libservo: Move size handling to RenderContext from WindowMethods (#35621)

This is the first step toward removing `WindowMethods`, which will
gradually be integrated into the `WebView` and `WebViewDelegate`. Sizing
of the `WebView` is now handled by the a size associated with a
`RenderingContext`. `WebView`s will eventually just paint the entire
size of their `RenderingContext`. Notes:

- This is transitionary step so now there is a `WebView::resize` and a
  `WebView::move_resize`. The first is the future which will resize the
  `WebView` and its associated `RenderingContext`. The second is a
  function that the virtual `WebView`s that will soon be replaced by a
  the one-`WebView` per `WebView` model.
- We do not need to call `WebView::move_resize` at as much any longer
  because the default size of the `WebView` is to take up the whole
  `RenderingContext`.
- `SurfmanRenderingContext` is no longer exposed in the API, as a
  surfman context doesn't naturally have a size unless a surface is
  bound to it.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>

ports/servoshell/egl/android/simpleservo.rs

@@ -6,6 +6,7 @@ use std::cell::RefCell;
 use std::mem;
 use std::rc::Rc;
 
+use dpi::PhysicalSize;
 use raw_window_handle::{DisplayHandle, RawDisplayHandle, RawWindowHandle, WindowHandle};
 pub use servo::webrender_api::units::DeviceIntRect;
 /// The EventLoopWaker::wake function will be called from any thread.
@@ -68,11 +69,13 @@ pub fn init(
             WindowHandle::borrow_raw(init_opts.window_handle),
         )
     };
+
+    let size = init_opts.coordinates.viewport.size;
     let rendering_context = Rc::new(
         WindowRenderingContext::new(
             display_handle,
             window_handle,
-            &init_opts.coordinates.framebuffer_size(),
+            PhysicalSize::new(size.width as u32, size.height as u32),
         )
         .expect("Could not create RenderingContext"),
     );