Report errors from ChromiumEnv::GetChildren in Posix.

base/platform_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 BASE_PLATFORM_FILE_H_
 #define BASE_PLATFORM_FILE_H_
 
 #include "build/build_config.h"
 #if defined(OS_WIN)
 #include <windows.h>
@@ skipping 104 matching lines @@
   base::Time creation_time;
 };
 
 #if defined(OS_WIN)
 typedef HANDLE PlatformFile;
 const PlatformFile kInvalidPlatformFileValue = INVALID_HANDLE_VALUE;
 PlatformFileError LastErrorToPlatformFileError(DWORD saved_errno);
 #elif defined(OS_POSIX)
 typedef int PlatformFile;
 const PlatformFile kInvalidPlatformFileValue = -1;
-PlatformFileError ErrnoToPlatformFileError(int saved_errno);
+BASE_EXPORT PlatformFileError ErrnoToPlatformFileError(int saved_errno);
 #endif
 
 // Creates or opens the given file. If |created| is provided, it will be set to
 // true if a new file was created [or an old one truncated to zero length to
 // simulate a new file, which can happen with PLATFORM_FILE_CREATE_ALWAYS], and
 // false otherwise.  |error| can be NULL.
 //
 // This function fails with 'access denied' if the |name| contains path
 // traversal ('..') components.
 BASE_EXPORT PlatformFile CreatePlatformFile(const FilePath& name,
@@ skipping 135 matching lines @@
     return temp;
   }
 
  private:
   PlatformFile* value_;
 };
 
 }  // namespace base
 
 #endif  // BASE_PLATFORM_FILE_H_