Don't subtract border from max size for display rect.

ui/views/corewm/test/tooltip_aura_test_api.h

Index: ui/views/corewm/test/tooltip_aura_test_api.h
diff --git a/ui/views/corewm/test/tooltip_aura_test_api.h b/ui/views/corewm/test/tooltip_aura_test_api.h
new file mode 100644
index 0000000000000000000000000000000000000000..15db1e85081f2aa45fbcb28aadea389923dc90e4
--- /dev/null
+++ b/ui/views/corewm/test/tooltip_aura_test_api.h
@@ -0,0 +1,39 @@
+// Copyright 2016 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.
+
+#ifndef UI_VIEWS_COREWM_TEST_TOOLTIP_AURA_TEST_API_H_
+#define UI_VIEWS_COREWM_TEST_TOOLTIP_AURA_TEST_API_H_
+
+#include <stddef.h>
+
+#include "base/macros.h"
+
+namespace gfx {
+class RenderText;
+}
+
+namespace views {
+namespace corewm {
+class TooltipAura;
+
+namespace test {
+
+class TooltipAuraTestApi {
+ public:
+  explicit TooltipAuraTestApi(TooltipAura* tooltip_aura)
+      : tooltip_aura_(tooltip_aura) {}
+
+  gfx::RenderText* GetRenderText();
+
+ private:
+  TooltipAura* tooltip_aura_;
+
+  DISALLOW_COPY_AND_ASSIGN(TooltipAuraTestApi);
+};
+
+}  // namespace test
+}  // namespace corewm
+}  // namespace views
+
+#endif  // UI_VIEWS_COREWM_TEST_TOOLTIP_AURA_TEST_API_H_