Reduce the fullscreen window height by 1px on activation loss.

ui/views/win/hwnd_message_handler.cc

Index: ui/views/win/hwnd_message_handler.cc
diff --git a/ui/views/win/hwnd_message_handler.cc b/ui/views/win/hwnd_message_handler.cc
index f632827ca29663e93365929d151c4c1c5add9d49..946a3d9c1d3af4eb2ebfc126eb00cdb8670d3caa 100644
--- a/ui/views/win/hwnd_message_handler.cc
+++ b/ui/views/win/hwnd_message_handler.cc
@@ -929,7 +929,8 @@ LRESULT HWNDMessageHandler::OnWndProc(UINT message,
   }
 
   if (message == WM_ACTIVATE && IsTopLevelWindow(window))

[sky, 2016/02/18 17:18:47]

nit: add {} now

-    PostProcessActivateMessage(LOWORD(w_param), !!HIWORD(w_param));
+    PostProcessActivateMessage(LOWORD(w_param), !!HIWORD(w_param),
+                               reinterpret_cast<HWND>(l_param));
   return result;
 }
 
@@ -1027,12 +1028,16 @@ void HWNDMessageHandler::SetInitialFocus() {
   }
 }
 
-void HWNDMessageHandler::PostProcessActivateMessage(int activation_state,
-                                                    bool minimized) {
+void HWNDMessageHandler::PostProcessActivateMessage(
+    int activation_state,
+    bool minimized,
+    HWND window_gaining_or_losing_activation) {
   DCHECK(IsTopLevelWindow(hwnd()));
   const bool active = activation_state != WA_INACTIVE && !minimized;
-  if (delegate_->CanActivate())
-    delegate_->HandleActivationChanged(active);
+  if (delegate_->CanActivate()) {
+    delegate_->HandleActivationChanged(active,
+                                       window_gaining_or_losing_activation);
+  }
 }
 
 void HWNDMessageHandler::RestoreEnabledIfNecessary() {