[PPAPI] Fix a bunch of spelling mistakes

ppapi/cpp/dev/scriptable_object_deprecated.cc

 // 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.
 
 #include "ppapi/cpp/dev/scriptable_object_deprecated.h"
 #include "ppapi/c/dev/ppb_memory_dev.h"
 #include "ppapi/c/dev/ppp_class_deprecated.h"
 #include "ppapi/cpp/module.h"
 #include "ppapi/cpp/var.h"
 
@@ skipping 160 matching lines @@
 
 Var ScriptableObject::Call(const Var& /*method_name*/,
                            const std::vector<Var>& /*args*/,
                            Var* exception) {
   *exception = Var("Method does not exist to call in ScriptableObject");
   return Var();
 }
 
 Var ScriptableObject::Construct(const std::vector<Var>& /*args*/,
                                 Var* exception) {
-  *exception = Var("Constuct method does not exist in ScriptableObject");
+  *exception = Var("Construct method does not exist in ScriptableObject");
   return Var();
 }
 
 // static
 const PPP_Class_Deprecated* ScriptableObject::GetClass() {
   return &plugin_class;
 }
 
 }  // namespace deprecated
 
 }  // namespace pp