[Mac] Move ScopedSendingEvent from content/common/mac to base/mac.

content/common/mac/scoped_sending_event_unittest.mm

Index: content/common/mac/scoped_sending_event_unittest.mm
diff --git a/content/common/mac/scoped_sending_event_unittest.mm b/content/common/mac/scoped_sending_event_unittest.mm
deleted file mode 100644
index 510a821c7843428f10ab7709663dd0d2b10fffba..0000000000000000000000000000000000000000
--- a/content/common/mac/scoped_sending_event_unittest.mm
+++ /dev/null
@@ -1,38 +0,0 @@
-// 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.
-
-#import "content/common/mac/scoped_sending_event.h"
-
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace {
-
-// Sets the flag within scope, resets when leaving scope.
-TEST(ScopedSendingEventTest, SetHandlingSendEvent) {
-  id<CrAppProtocol> app = NSApp;
-  EXPECT_FALSE([app isHandlingSendEvent]);
-  {
-    content::mac::ScopedSendingEvent is_handling_send_event;
-    EXPECT_TRUE([app isHandlingSendEvent]);
-  }
-  EXPECT_FALSE([app isHandlingSendEvent]);
-}
-
-// Nested call restores previous value rather than resetting flag.
-TEST(ScopedSendingEventTest, NestedSetHandlingSendEvent) {
-  id<CrAppProtocol> app = NSApp;
-  EXPECT_FALSE([app isHandlingSendEvent]);
-  {
-    content::mac::ScopedSendingEvent is_handling_send_event;
-    EXPECT_TRUE([app isHandlingSendEvent]);
-    {
-      content::mac::ScopedSendingEvent nested_is_handling_send_event;
-      EXPECT_TRUE([app isHandlingSendEvent]);
-    }
-    EXPECT_TRUE([app isHandlingSendEvent]);
-  }
-  EXPECT_FALSE([app isHandlingSendEvent]);
-}
-
-}  // namespace