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

ui/views/win/hwnd_message_handler.cc

 // Copyright (c) 2012 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 "ui/views/win/hwnd_message_handler.h"
 
 #include <dwmapi.h>
 #include <oleacc.h>
 #include <shellapi.h>
 #include <tchar.h>
@@ skipping 910 matching lines @@
     if (!ref || !::IsWindow(window))
       return result;
   }
 
   if (delegate_) {
     delegate_->PostHandleMSG(message, w_param, l_param);
     if (message == WM_NCDESTROY)
       delegate_->HandleDestroyed();
   }
 
   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;
 }
 
 LRESULT HWNDMessageHandler::HandleMouseMessage(unsigned int message,
                                                WPARAM w_param,
                                                LPARAM l_param,
                                                bool* handled) {
   // Don't track forwarded mouse messages. We expect the caller to track the
   // mouse.
   base::WeakPtr<HWNDMessageHandler> ref(weak_factory_.GetWeakPtr());
@@ skipping 77 matching lines @@
 }
 
 void HWNDMessageHandler::SetInitialFocus() {
   if (!(GetWindowLong(hwnd(), GWL_EXSTYLE) & WS_EX_TRANSPARENT) &&
       !(GetWindowLong(hwnd(), GWL_EXSTYLE) & WS_EX_NOACTIVATE)) {
     // The window does not get keyboard messages unless we focus it.
     SetFocus(hwnd());
   }
 }
 
-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() {
   if (delegate_->IsModal() && !restored_enabled_) {
     restored_enabled_ = true;
     // If we were run modally, we need to undo the disabled-ness we inflicted on
     // the owner's parent hierarchy.
     HWND start = ::GetWindow(hwnd(), GW_OWNER);
     while (start) {
       ::EnableWindow(start, TRUE);
@@ skipping 1524 matching lines @@
 
     default:
       left_button_down_on_caption_ = false;
       break;
   }
   return handled;
 }
 
 
 }  // namespace views