(Not ready for review!) Toolbar and views high dpi support.

ui/gfx/screen_win.cc

Index: ui/gfx/screen_win.cc
diff --git a/ui/gfx/screen_win.cc b/ui/gfx/screen_win.cc
index f17fbc4a3935e9a378e8cac37f24d92f9813d8fb..6266badf148d6f5ff29f4e641f08ca8235940360 100644
--- a/ui/gfx/screen_win.cc
+++ b/ui/gfx/screen_win.cc
@@ -7,6 +7,7 @@
 #include <windows.h>
 
 #include "base/logging.h"
+#include "ui/base/win/dpi.h"
 #include "ui/gfx/display.h"
 
 namespace {
@@ -46,6 +47,11 @@ bool ScreenWin::IsDIPEnabled() {
 gfx::Point ScreenWin::GetCursorScreenPoint() {
   POINT pt;
   GetCursorPos(&pt);
+  if (IsDIPEnabled()) {
+    static float os_scale = ui::GetDPIScale();
+    pt.x *= os_scale;
+    pt.y *= os_scale;
+  }
   return gfx::Point(pt);
 }