Mostly minor changes such as adding <code></code> around elements, a little rewriting, and a few ...

ppapi/c/pp_errors.h

 /* 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.
  */
 #ifndef PPAPI_C_PP_ERRORS_H_
 #define PPAPI_C_PP_ERRORS_H_
 
 /**
  * @file
  * This file defines an enumeration of all PPAPI error codes.
@@ skipping 11 matching lines @@
 enum {
   /**
    * This value is returned by a function on successful synchronous completion
    * or is passed as a result to a PP_CompletionCallback_Func on successful
    * asynchronous completion.
    */
   PP_OK = 0,
 
   /**
    * This value is returned by a function that accepts a PP_CompletionCallback
-   * and cannot complete synchronously.  This code indicates that the given
+   * and cannot complete synchronously. This code indicates that the given
    * callback will be asynchronously notified of the final result once it is
    * available.
    */
   PP_OK_COMPLETIONPENDING = -1,
   PP_ERROR_WOULDBLOCK = -1,  /* DEPRECATED: DO NOT USE */
 
   /** This value indicates failure for unspecified reasons. */
   PP_ERROR_FAILED = -2,
 
   /**
@@ skipping 52 matching lines @@
    */
   PP_ERROR_USERCANCEL = -40
 };
 
 /**
  * @}
  * End of addtogroup Enums
  */
 
 #endif  /* PPAPI_C_PP_ERRORS_H_ */