MacViews: fix bubble direction in RTL.

ui/views/style/platform_style_mac_cocoa_browser.mm

Index: ui/views/style/platform_style_mac_cocoa_browser.mm
diff --git a/ui/views/style/platform_style_mac_cocoa_browser.mm b/ui/views/style/platform_style_mac_cocoa_browser.mm
new file mode 100644
index 0000000000000000000000000000000000000000..7dd53a62d307c5bbd98ed3c6570cbd7612cb8e5b
--- /dev/null
+++ b/ui/views/style/platform_style_mac_cocoa_browser.mm
@@ -0,0 +1,13 @@
+// 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.
+
+#include "ui/views/style/platform_style.h"
+
+namespace views {
+
+// On Mac, the Cocoa browser window does not flip its UI in RTL. Bubbles should
+// open in the same direction as LTR.
+const bool PlatformStyle::kMirrorBubbleArrowInRTLByDefault = false;
+
+}  // namespace views