more spell checking

base/threading/thread_checker.h

 // Copyright (c) 2012 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 BASE_THREADING_THREAD_CHECKER_H_
 #define BASE_THREADING_THREAD_CHECKER_H_
 
 // Apart from debug builds, we also enable the thread checker in
 // builds with DCHECK_ALWAYS_ON so that trybots and waterfall bots
 // with this define will get the same level of thread checking as
@@ skipping 28 matching lines @@
   void DetachFromThread() {}
 };
 
 // ThreadChecker is a helper class used to help verify that some methods of a
 // class are called from the same thread. It provides identical functionality to
 // base::NonThreadSafe, but it is meant to be held as a member variable, rather
 // than inherited from base::NonThreadSafe.
 //
 // While inheriting from base::NonThreadSafe may give a clear indication about
 // the thread-safety of a class, it may also lead to violations of the style
-// guide with regard to multiple inheritence. The choice between having a
+// guide with regard to multiple inheritance. The choice between having a
 // ThreadChecker member and inheriting from base::NonThreadSafe should be based
 // on whether:
 //  - Derived classes need to know the thread they belong to, as opposed to
 //    having that functionality fully encapsulated in the base class.
 //  - Derived classes should be able to reassign the base class to another
 //    thread, via DetachFromThread.
 //
 // If neither of these are true, then having a ThreadChecker member and calling
 // CalledOnValidThread is the preferable solution.
 //
@@ skipping 16 matching lines @@
 #else
 class ThreadChecker : public ThreadCheckerDoNothing {
 };
 #endif  // ENABLE_THREAD_CHECKER
 
 #undef ENABLE_THREAD_CHECKER
 
 }  // namespace base
 
 #endif  // BASE_THREADING_THREAD_CHECKER_H_