Fixed a couple warnings that came up during doxygen generation.

ppapi/cpp/mouse_lock.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 PPAPI_CPP_MOUSE_LOCK_H_
 #define PPAPI_CPP_MOUSE_LOCK_H_
 
 #include "ppapi/c/pp_stdint.h"
 
 /// @file
 /// This file defines the API for locking the target of mouse events to a
 /// specific module instance.
 
 namespace pp {
 
 class CompletionCallback;
 class Instance;
 
-/// This class allows you to associate the <codee>PPP_MouseLock</code> and
+/// This class allows you to associate the <code>PPP_MouseLock</code> and
 /// <code>PPB_MouseLock</code> C-based interfaces with an object. It associates
 /// itself with the given instance, and registers as the global handler for
 /// handling the <code>PPP_MouseLock</code> interface that the browser calls.
 ///
 /// You would typically use this class by inheritance on your instance or by
 /// composition.
 ///
 /// <strong>Example (inheritance):</strong>
 /// <code>
 ///   class MyInstance : public pp::Instance, public pp::MouseLock {
@@ skipping 40 matching lines @@
   /// reports the last known mouse position just as mouse lock was
   /// entered. The <code>GetMovement()</code> function provides relative
   /// movement information indicating what the change in position of the mouse
   /// would be had it not been locked.
   ///
   /// The browser may revoke the mouse lock for reasons including (but not
   /// limited to) the user pressing the ESC key, the user activating another
   /// program using a reserved keystroke (e.g. ALT+TAB), or some other system
   /// event.
   ///
-  /// @param[in] callback A <code>PP_CompletionCallback</code> to be called upon
+  /// @param[in] cc A <code>CompletionCallback</code> to be called upon
   /// completion.
   ///
   /// @return An int32_t containing an error code from <code>pp_errors.h</code>.
   int32_t LockMouse(const CompletionCallback& cc);
 
   /// UnlockMouse causes the mouse to be unlocked, allowing it to track user
   /// movement again. This is an asynchronous operation. The module instance
   /// will be notified using the <code>PPP_MouseLock</code> interface when it
   /// has lost the mouse lock.
   void UnlockMouse();
 
  private:
   Instance* associated_instance_;
 };
 
 }  // namespace pp
 
 #endif  // PPAPI_CPP_MOUSE_LOCK_H_