Add our own (mojo::util::)ScopedFILE and replace uses of base::ScopedFILE with it.

mojo/edk/test/test_utils.h

 // Copyright 2014 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 MOJO_EDK_TEST_TEST_UTILS_H_
 #define MOJO_EDK_TEST_TEST_UTILS_H_
 
 #include <stddef.h>
 #include <stdio.h>
 
 #include <string>
 
-#include "base/files/scoped_file.h"
 #include "mojo/edk/embedder/platform_handle.h"
 #include "mojo/edk/embedder/scoped_platform_handle.h"
+#include "mojo/edk/util/scoped_file.h"
 
 namespace mojo {
 namespace test {
 
 // On success, |bytes_written| is updated to the number of bytes written;
 // otherwise it is untouched.
 bool BlockingWrite(const embedder::PlatformHandle& handle,
                    const void* buffer,
                    size_t bytes_to_write,
                    size_t* bytes_written);
 
 // On success, |bytes_read| is updated to the number of bytes read; otherwise it
 // is untouched.
 bool BlockingRead(const embedder::PlatformHandle& handle,
                   void* buffer,
                   size_t buffer_size,
                   size_t* bytes_read);
 
 // If the read is done successfully or would block, the function returns true
 // and updates |bytes_read| to the number of bytes read (0 if the read would
 // block); otherwise it returns false and leaves |bytes_read| untouched.
 // |handle| must already be in non-blocking mode.
 bool NonBlockingRead(const embedder::PlatformHandle& handle,
                      void* buffer,
                      size_t buffer_size,
                      size_t* bytes_read);
 
 // Gets a (scoped) |PlatformHandle| from the given (scoped) |FILE|.
-embedder::ScopedPlatformHandle PlatformHandleFromFILE(base::ScopedFILE fp);
+embedder::ScopedPlatformHandle PlatformHandleFromFILE(util::ScopedFILE fp);
 
 // Gets a (scoped) |FILE| from a (scoped) |PlatformHandle|.
-base::ScopedFILE FILEFromPlatformHandle(embedder::ScopedPlatformHandle h,
+util::ScopedFILE FILEFromPlatformHandle(embedder::ScopedPlatformHandle h,
                                         const char* mode);
 
 }  // namespace test
 }  // namespace mojo
 
 #endif  // MOJO_EDK_TEST_TEST_UTILS_H_