Current work-in-progress crbug.com/567021

third_party/WebKit/Source/core/css/MediaValuesDynamicInitialViewport.cpp

Index: third_party/WebKit/Source/core/css/MediaValuesDynamicInitialViewport.cpp
diff --git a/third_party/WebKit/Source/core/css/MediaValuesDynamicInitialViewport.cpp b/third_party/WebKit/Source/core/css/MediaValuesDynamicInitialViewport.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..181e433909d7cc95e0920e253000a87859c3f772
--- /dev/null
+++ b/third_party/WebKit/Source/core/css/MediaValuesDynamicInitialViewport.cpp
@@ -0,0 +1,27 @@
+// Copyright 2016 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 "core/css/MediaValuesDynamicInitialViewport.h"
+
+#include "core/dom/Document.h"
+#include "core/frame/FrameView.h"
+#include "core/frame/LocalFrame.h"
+
+namespace blink {
+
+double MediaValuesDynamicInitialViewport::viewportWidth() const
+{
+    DCHECK(m_frame && m_frame->view() && m_frame->document());
+    int viewportWidth = m_frame->view()->frameRect().width();
+    return adjustDoubleForAbsoluteZoom(viewportWidth, m_frame->document()->layoutViewItem().styleRef());
+}
+
+double MediaValuesDynamicInitialViewport::viewportHeight() const
+{
+    DCHECK(m_frame && m_frame->view() && m_frame->document());
+    int viewportHeight = m_frame->view()->frameRect().height();
+    return adjustDoubleForAbsoluteZoom(viewportHeight, m_frame->document()->layoutViewItem().styleRef());
+}
+
+} // namespace blink