Enable high dpi in win/views.

ui/views/widget/aero_tooltip_manager.cc

Index: ui/views/widget/aero_tooltip_manager.cc
diff --git a/ui/views/widget/aero_tooltip_manager.cc b/ui/views/widget/aero_tooltip_manager.cc
index 620d821d4364241ec53ceb82977cf9e3f2d6acef..233d75c862e33bac685161b60bb415da171e62aa 100644
--- a/ui/views/widget/aero_tooltip_manager.cc
+++ b/ui/views/widget/aero_tooltip_manager.cc
@@ -12,6 +12,7 @@
 #include "base/message_loop.h"
 #include "ui/base/l10n/l10n_util_win.h"
 #include "ui/base/win/hwnd_util.h"
+#include "ui/base/win/dpi.h"
 #include "ui/gfx/point.h"
 
 namespace views {
@@ -40,12 +41,14 @@ void AeroTooltipManager::OnMouse(UINT u_msg, WPARAM w_param, LPARAM l_param) {
     initial_timer_->Disown();
 
   if (u_msg == WM_MOUSEMOVE || u_msg == WM_NCMOUSEMOVE) {
-    gfx::Point mouse_pos(l_param);
+    gfx::Point mouse_pos_in_pixels(l_param);
+    gfx::Point mouse_pos = ui::win::ScreenToDIPPoint(mouse_pos_in_pixels);
     if (u_msg == WM_NCMOUSEMOVE) {
       // NC message coordinates are in screen coordinates.
-      POINT temp = mouse_pos.ToPOINT();
+      POINT temp = mouse_pos_in_pixels.ToPOINT();
       ::MapWindowPoints(HWND_DESKTOP, GetParent(), &temp, 1);
-      mouse_pos.SetPoint(temp.x, temp.y);
+      mouse_pos_in_pixels.SetPoint(temp.x, temp.y);
+      mouse_pos = ui::win::ScreenToDIPPoint(mouse_pos_in_pixels);
     }
     if (last_mouse_pos_ != mouse_pos) {
       last_mouse_pos_ = mouse_pos;