Add an IPC for PNaCl to check if the session is incognito, before deciding

ppapi/native_client/src/trusted/plugin/temporary_file.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 NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_TEMPORARY_FILE_H_
 #define NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_TEMPORARY_FILE_H_
 
 #include "native_client/src/include/nacl_macros.h"
 #include "native_client/src/include/nacl_string.h"
 #include "native_client/src/trusted/desc/nacl_desc_wrapper.h"
@@ skipping 29 matching lines @@
   explicit TempFile(Plugin* plugin);
   ~TempFile();
 
   // Opens a writeable file IO object and descriptor referring to the file.
   void Open(const pp::CompletionCallback& cb);
   // Resets file position of the handle, for reuse.
   bool Reset();
 
   // Accessors.
   // The nacl::DescWrapper* for the writeable version of the file.
-  nacl::DescWrapper* get_wrapper() { return wrapper_.get(); }
-  nacl::DescWrapper* release_wrapper() {
-    return wrapper_.release();
+  nacl::DescWrapper* write_wrapper() { return write_wrapper_.get(); }
+  nacl::DescWrapper* read_wrapper() { return read_wrapper_.get(); }
+  nacl::DescWrapper* release_read_wrapper() {
+    return read_wrapper_.release();
   }
 
   // For quota management.
   const nacl::string identifier() const {
     return nacl::string(reinterpret_cast<const char*>(identifier_));
   }
 
  private:
   NACL_DISALLOW_COPY_AND_ASSIGN(TempFile);
 
   Plugin* plugin_;
-  nacl::scoped_ptr<nacl::DescWrapper> wrapper_;
+  nacl::scoped_ptr<nacl::DescWrapper> read_wrapper_;
+  nacl::scoped_ptr<nacl::DescWrapper> write_wrapper_;
 
   // An identifier string used for quota request processing.  The quota
   // interface needs a string that is unique per sel_ldr instance only, so
   // the identifiers can be reused between runs of the translator, start-ups of
   // the browser, etc.
   uint8_t identifier_[16];
   // A counter to dole out unique identifiers.
   static uint32_t next_identifier;
 };
 
 }  // namespace plugin
 
 #endif  // NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_TEMPORARY_FILE_H_