Enable high dpi in win/views.

chrome/browser/ui/views/tabs/dragged_tab_view.cc

Index: chrome/browser/ui/views/tabs/dragged_tab_view.cc
diff --git a/chrome/browser/ui/views/tabs/dragged_tab_view.cc b/chrome/browser/ui/views/tabs/dragged_tab_view.cc
index 6854bd8e4a495a847dc56c481475101e95cea5c4..d95d9dac1999d7bd8563a3b9262a1099be566263 100644
--- a/chrome/browser/ui/views/tabs/dragged_tab_view.cc
+++ b/chrome/browser/ui/views/tabs/dragged_tab_view.cc
@@ -13,6 +13,7 @@
 #if defined(USE_AURA)
 #include "ui/views/widget/native_widget_aura.h"
 #elif defined(OS_WIN)
+#include "ui/base/win/dpi.h"
 #include "ui/views/widget/native_widget_win.h"
 #endif
 
@@ -81,6 +82,9 @@ void DraggedTabView::MoveTo(const gfx::Point& screen_point) {
   int y = screen_point.y() - ScaleValue(mouse_tab_offset_.y());
 
 #if defined(OS_WIN) && !defined(USE_AURA)
+  double scale = ui::win::GetDeviceScaleFactor();
+  x = static_cast<int>(scale * screen_point.x());
+  y = static_cast<int>(scale * screen_point.y());
   // TODO(beng): make this cross-platform
   int show_flags = container_->IsVisible() ? SWP_NOZORDER : SWP_SHOWWINDOW;
   SetWindowPos(container_->GetNativeView(), HWND_TOP, x, y, 0, 0,