[PPAPI] Fix a bunch of spelling mistakes

ppapi/cpp/point.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_CPP_POINT_H_
 #define PPAPI_CPP_POINT_H_
 
 #include "ppapi/c/pp_point.h"
 
 /// @file
@@ skipping 83 matching lines @@
   /// y values.
   ///
   /// @param[in] other A Point.
   ///
   /// @return A new Point containing the result.
   Point operator+(const Point& other) const {
     return Point(x() + other.x(), y() + other.y());
   }
 
   /// Subtracts one Point from another Point by subtracting their x values
-  /// and y values. Returnes a new point with the result.
+  /// and y values. Returns a new point with the result.
   ///
   /// @param[in] other A Point.
   ///
   /// @return A new Point containing the result.
   Point operator-(const Point& other) const {
     return Point(x() - other.x(), y() - other.y());
   }
 
   /// Adds two Points (this and other) together by adding their x and y
   /// values. Returns this point as the result.
@@ skipping 118 matching lines @@
   /// y values.
   ///
   /// @param[in] other A Point.
   ///
   /// @return A new Point containing the result.
   FloatPoint operator+(const FloatPoint& other) const {
     return FloatPoint(x() + other.x(), y() + other.y());
   }
 
   /// Subtracts one Point from another Point by subtracting their x values
-  /// and y values. Returnes a new point with the result.
+  /// and y values. Returns a new point with the result.
   ///
   /// @param[in] other A FloatPoint.
   ///
   /// @return A new Point containing the result.
   FloatPoint operator-(const FloatPoint& other) const {
     return FloatPoint(x() - other.x(), y() - other.y());
   }
 
   /// Adds two Points (this and other) together by adding their x and y
   /// values. Returns this point as the result.
@@ skipping 73 matching lines @@
 /// @param[in] lhs The Point on the left-hand side of the equation.
 /// @param[in] rhs The Point on the right-hand side of the equation.
 ///
 /// @return true if the coordinates of lhs are equal to the coordinates
 /// of rhs, otherwise false.
 inline bool operator!=(const pp::FloatPoint& lhs, const pp::FloatPoint& rhs) {
   return !(lhs == rhs);
 }
 
 #endif  // PPAPI_CPP_POINT_H_