Perform direct routing of mouse events when the pointer is locked.

content/browser/pointer_lock_browsertest.h

Index: content/browser/pointer_lock_browsertest.h
diff --git a/content/browser/pointer_lock_browsertest.h b/content/browser/pointer_lock_browsertest.h
new file mode 100644
index 0000000000000000000000000000000000000000..fcadac70a310c185b387e27f6052e7c8d436ebc3
--- /dev/null
+++ b/content/browser/pointer_lock_browsertest.h
@@ -0,0 +1,9 @@
+// Copyright 2017 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.
+
+namespace content {
+
+void InstallCreateHooksForPointerLockBrowserTests();
+
+}  // namespace content