Increase warning level to 4 on Visual Studio

webkit/plugins/npapi/test/plugin_windowless_test.cc

 // Copyright (c) 2011 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.
 
 #define STRSAFE_NO_DEPRECATE
 #include "base/string_number_conversions.h"
 #include "base/string_util.h"
 #include "webkit/plugins/npapi/test/plugin_windowless_test.h"
 #include "webkit/plugins/npapi/test/plugin_client.h"
 
@@ skipping 31 matching lines @@
 }
 
 static bool IsMouseUpEvent(NPEvent* np_event) {
 #if defined(OS_WIN)
   return WM_LBUTTONUP == np_event->event;
 #elif defined(OS_MACOSX)
   return np_event->what == mouseUp;
 #endif
 }
 
+#if defined(OS_MACOSX)
 static bool IsWindowActivationEvent(NPEvent* np_event) {
-#if defined(OS_WIN)
-  NOTIMPLEMENTED();
-  return false;
-#elif defined(OS_MACOSX)
   return np_event->what == activateEvt;
+}
 #endif
-}
 
 bool WindowlessPluginTest::IsWindowless() const {
   return true;
 }
 
 int16 WindowlessPluginTest::HandleEvent(void* event) {
 
   NPNetscapeFuncs* browser = NPAPIClient::PluginClient::HostFunctions();
 
   NPBool supports_windowless = 0;
@@ skipping 24 matching lines @@
     }
 
     DeleteObject(clipping_region);
 #endif
 
     if (test_name() == "execute_script_delete_in_paint") {
       ExecuteScriptDeleteInPaint(browser);
     } else if (test_name() == "multiple_instances_sync_calls") {
       MultipleInstanceSyncCalls(browser);
     }
-#if OS_MACOSX
+#if defined(OS_MACOSX)
   } else if (IsWindowActivationEvent(np_event) &&
              test_name() == "convert_point") {
       ConvertPoint(browser);
 #endif
   } else if (IsMouseMoveEvent(np_event) &&
              test_name() == "execute_script_delete_in_mouse_move") {
     ExecuteScript(browser, id(), "DeletePluginWithinScript();", NULL);
     SignalTestCompleted();
   } else if (IsMouseUpEvent(np_event) &&
              test_name() == "delete_frame_test") {
@@ skipping 141 matching lines @@
     error_string.append(StringForPoint(flipped_window_x, flipped_window_y));
     SetError(error_string);
   }
 #else
   SetError("Unimplemented");
 #endif
   SignalTestCompleted();
 }
 
 } // namespace NPAPIClient