1 files changed, 65 insertions, 0 deletions
diff --git a/chromium/third_party/blink/renderer/core/frame/window_controls_overlay.cc b/chromium/third_party/blink/renderer/core/frame/window_controls_overlay.cc
new file mode 100644
index 00000000000..0804aa5ed53
--- /dev/null
+++ b/chromium/third_party/blink/renderer/core/frame/window_controls_overlay.cc
@@ -0,0 +1,65 @@
+// Copyright 2020 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.
+
+#include "third_party/blink/renderer/core/frame/window_controls_overlay.h"
+
+#include "third_party/blink/renderer/core/frame/local_dom_window.h"
+#include "third_party/blink/renderer/core/frame/local_frame.h"
+#include "third_party/blink/renderer/core/frame/navigator.h"
+#include "third_party/blink/renderer/platform/heap/handle.h"
+
+namespace blink {
+
+// static
+const char WindowControlsOverlay::kSupplementName[] = "WindowControlsOverlay";
+
+// static
+WindowControlsOverlay& WindowControlsOverlay::From(Navigator& navigator) {
+  WindowControlsOverlay* supplement =
+      Supplement<Navigator>::From<WindowControlsOverlay>(navigator);
+  if (!supplement) {
+    supplement = MakeGarbageCollected<WindowControlsOverlay>(navigator);
+    ProvideTo(navigator, supplement);
+  }
+  return *supplement;
+}
+
+// static
+WindowControlsOverlay* WindowControlsOverlay::windowControlsOverlay(
+    Navigator& navigator) {
+  return &From(navigator);
+}
+
+WindowControlsOverlay::WindowControlsOverlay(Navigator& navigator)
+    : Supplement<Navigator>(navigator) {}
+
+WindowControlsOverlay::~WindowControlsOverlay() = default;
+
+bool WindowControlsOverlay::visible() const {
+  if (!GetSupplementable()->DomWindow())
+    return false;
+
+  return GetSupplementable()
+      ->DomWindow()
+      ->GetFrame()
+      ->IsWindowControlsOverlayVisible();
+}
+
+DOMRect* WindowControlsOverlay::getBoundingClientRect() const {
+  if (!GetSupplementable()->DomWindow())
+    return DOMRect::Create(0, 0, 0, 0);
+
+  const auto& rect = GetSupplementable()
+                         ->DomWindow()
+                         ->GetFrame()
+                         ->GetWindowControlsOverlayRect();
+  return DOMRect::Create(rect.x(), rect.y(), rect.width(), rect.height());
+}
+
+void WindowControlsOverlay::Trace(blink::Visitor* visitor) const {
+  ScriptWrappable::Trace(visitor);
+  Supplement<Navigator>::Trace(visitor);
+}
+
+}  // namespace blink