GMC: Add border radius to media dialog

This CL adds an 8px border radius to the GMC dialog to match the specs.

Bug: 982925
Change-Id: Ib72984982cbe7f5874176ef325aecfb9a80734b7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1716603Reviewed-by: Becca Hughes <beccahughes@chromium.org>
Commit-Queue: Tommy Steimel <steimel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#680573}

chrome/browser/ui/views/global_media_controls/media_dialog_view.cc

@@ -10,12 +10,18 @@
 #include "chrome/browser/ui/views/global_media_controls/media_notification_list_view.h"
 #include "services/media_session/public/mojom/media_session.mojom.h"
 #include "ui/views/background.h"
+#include "ui/views/bubble/bubble_frame_view.h"
 #include "ui/views/controls/label.h"
-#include "ui/views/layout/box_layout.h"
 #include "ui/views/layout/fill_layout.h"
 
 using media_session::mojom::MediaSessionAction;
 
+namespace {
+
+constexpr int kMediaDialogCornerRadius = 8;
+
+}  // anonymous namespace
+
 // static
 MediaDialogView* MediaDialogView::instance_ = nullptr;
 
@@ -67,6 +73,12 @@ bool MediaDialogView::Close() {
   return Cancel();
 }
 
+void MediaDialogView::AddedToWidget() {
+  views::BubbleFrameView* frame = GetBubbleFrameView();
+  if (frame)
+    frame->SetCornerRadius(kMediaDialogCornerRadius);
+}
+
 gfx::Size MediaDialogView::CalculatePreferredSize() const {
   // If we have active sessions, then fit to them.
   if (!active_sessions_view_->empty())

chrome/browser/ui/views/global_media_controls/media_dialog_view.h

@@ -36,6 +36,7 @@ class MediaDialogView : public views::BubbleDialogDelegateView,
   bool Close() override;
 
   // views::View implementation.
+  void AddedToWidget() override;
   gfx::Size CalculatePreferredSize() const override;
 
  private: