[NaCl SDK] Remove invalid assert from nacl_io.

native_client_sdk/src/libraries/nacl_io/kernel_proxy.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 LIBRARIES_NACL_IO_KERNEL_PROXY_H_
 #define LIBRARIES_NACL_IO_KERNEL_PROXY_H_
 
 #include <map>
 #include <string>
 
@@ skipping 30 matching lines @@
 // other classes should return Error (as defined by nacl_io/error.h).
 class KernelProxy : protected KernelObject {
  public:
   typedef std::map<std::string, MountFactory*> MountFactoryMap_t;
 
   KernelProxy();
   virtual ~KernelProxy();
 
   // Takes ownership of |ppapi|.
   // |ppapi| may be NULL. If so, no mount that uses pepper calls can be mounted.
-  virtual void Init(PepperInterface* ppapi);
+  virtual Error Init(PepperInterface* ppapi);
 
   // NaCl-only function to read resources specified in the NMF file.
   virtual int open_resource(const char* file);
 
   // KernelHandle and FD allocation and manipulation functions.
   virtual int open(const char* path, int oflag);
   virtual int close(int fd);
   virtual int dup(int fd);
   virtual int dup2(int fd, int newfd);
 
@@ skipping 133 matching lines @@
   virtual int AcquireSocketHandle(int fd, ScopedKernelHandle* handle);
 #endif
 
   ScopedSignalEmitter signal_emitter_;
   DISALLOW_COPY_AND_ASSIGN(KernelProxy);
 };
 
 }  // namespace nacl_io
 
 #endif  // LIBRARIES_NACL_IO_KERNEL_PROXY_H_