Make EDU Coexistence Dialog height consistent with the rest of OOBE

This cl makes sure that the dialog size and bounds are consistent
with the rest of onboarding flow.

Bug: 1169786
Change-Id: Ie433562bf353a287eaa8449cc8e50c27c0bce4b7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2645298Reviewed-by: Dan S <danan@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Yilkal Abe <yilkal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#846296}

chrome/browser/chromeos/login/screens/edu_coexistence_login_screen.cc

@@ -18,6 +18,7 @@
 #include "chrome/browser/supervised_user/supervised_user_features.h"
 #include "chrome/browser/ui/webui/chromeos/login/oobe_ui.h"
 #include "chrome/browser/ui/webui/signin/inline_login_dialog_chromeos_onboarding.h"
+#include "ui/aura/window.h"
 #include "ui/gfx/geometry/rect.h"
 
 namespace chromeos {
@@ -77,6 +78,8 @@ void EduCoexistenceLoginScreen::ShowImpl() {
 
   dialog_delegate_ =
       std::make_unique<InlineLoginDialogChromeOSOnboarding::Delegate>(dialog);
+  dialog_delegate_->UpdateDialogBounds(
+      oobe_ui->GetNativeView()->GetBoundsInScreen());
 }
 
 void EduCoexistenceLoginScreen::HideImpl() {