Minor changes as per Christians most-recent review of the docs.

ppapi/cpp/input_event.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_INPUT_EVENT_H_
 #define PPAPI_CPP_INPUT_EVENT_H_
 
 #include <string>
 
 #include "ppapi/c/ppb_input_event.h"
@@ skipping 103 matching lines @@
   /// <code>PP_InputEvent_Modifier</code> flags.
   ///
   /// @param[in] mouse_button The button that changed for mouse down or up
   /// events. This value will be <code>PP_EVENT_MOUSEBUTTON_NONE</code> for
   /// mouse move, enter, and leave events.
   ///
   /// @param[in] mouse_position A <code>Point</code> containing the x and y
   /// position of the mouse when the eent occurred.
   ///
   /// @param[in] click_count
-  /// TODO(brettw) figure out exactly what this means.
+  // TODO(brettw) figure out exactly what this means.
   ///
   /// @param[in] mouse_movement The change in position of the mouse.
   MouseInputEvent(Instance* instance,
                   PP_InputEvent_Type type,
                   PP_TimeTicks time_stamp,
                   uint32_t modifiers,
                   PP_InputEvent_MouseButton mouse_button,
                   const Point& mouse_position,
                   int32_t click_count,
                   const Point& mouse_movement);
@@ skipping 159 matching lines @@
   ///
   /// @return A string var representing a single typed character for character
   /// input events. For non-character input events the return value will be an
   /// undefined var.
   Var GetCharacterText() const;
 };
 
 }  // namespace pp
 
 #endif  // PPAPI_CPP_INPUT_EVENT_H_