Update ppapi/ to use scoped_refptr<T>::get() rather than implicit "operator T*"

ppapi/shared_impl/var.cc

 // 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.
 
 #include "ppapi/shared_impl/var.h"
 
 #include <limits>
 
 #include "base/logging.h"
 #include "base/string_number_conversions.h"
@@ skipping 139 matching lines @@
 }
 
 // static
 PP_Var StringVar::StringToPPVar(const std::string& var) {
   return StringToPPVar(var.c_str(), static_cast<uint32>(var.size()));
 }
 
 // static
 PP_Var StringVar::StringToPPVar(const char* data, uint32 len) {
   scoped_refptr<StringVar> str(new StringVar(data, len));
-  if (!str || !IsStringUTF8(str->value()))
+  if (!str.get() || !IsStringUTF8(str->value()))
     return PP_MakeNull();
   return str->GetPPVar();
 }
 
 // static
 StringVar* StringVar::FromPPVar(PP_Var var) {
   if (var.type != PP_VARTYPE_STRING)
     return NULL;
   scoped_refptr<Var> var_object(
       PpapiGlobals::Get()->GetVarTracker()->GetVar(var));
-  if (!var_object)
+  if (!var_object.get())
     return NULL;
   return var_object->AsStringVar();
 }
 
 // static
 PP_Var StringVar::SwapValidatedUTF8StringIntoPPVar(std::string* src) {
   scoped_refptr<StringVar> str(new StringVar);
   str->value_.swap(*src);
   return str->GetPPVar();
 }
@@ skipping 13 matching lines @@
 PP_VarType ArrayBufferVar::GetType() const {
   return PP_VARTYPE_ARRAY_BUFFER;
 }
 
 // static
 ArrayBufferVar* ArrayBufferVar::FromPPVar(PP_Var var) {
   if (var.type != PP_VARTYPE_ARRAY_BUFFER)
     return NULL;
   scoped_refptr<Var> var_object(
       PpapiGlobals::Get()->GetVarTracker()->GetVar(var));
-  if (!var_object)
+  if (!var_object.get())
     return NULL;
   return var_object->AsArrayBufferVar();
 }
 
 }  // namespace ppapi