Remove base's implicit_cast.

net/disk_cache/entry_unittest.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 "base/basictypes.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/files/file.h"
 #include "base/files/file_util.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 2700 matching lines @@
   entry = NULL;
 
   // Force the entry to flush to disk, so subsequent platform file operations
   // succed.
   ASSERT_EQ(net::OK, OpenEntry(key, &entry));
   entry->Close();
   entry = NULL;
 
   // Truncate the file such that the length isn't sufficient to have an EOF
   // record.
-  int kTruncationBytes = -implicit_cast<int>(sizeof(disk_cache::SimpleFileEOF));
+  int kTruncationBytes = -static_cast<int>(sizeof(disk_cache::SimpleFileEOF));
   const base::FilePath entry_path = cache_path_.AppendASCII(
       disk_cache::simple_util::GetFilenameFromKeyAndFileIndex(key, 0));
   const int64 invalid_size =
       disk_cache::simple_util::GetFileSizeFromKeyAndDataSize(key,
                                                              kTruncationBytes);
   EXPECT_TRUE(TruncatePath(entry_path, invalid_size));
   EXPECT_EQ(net::ERR_FAILED, OpenEntry(key, &entry));
   DisableIntegrityCheck();
 }
 
@@ skipping 1408 matching lines @@
 
   ret = entry->ReadSparseData(kSize, buffer.get(), kSize, callback.callback());
   EXPECT_EQ(kSize, callback.GetResult(ret));
 
   // Make sure the first range was removed when the second was written.
   ret = entry->ReadSparseData(0, buffer.get(), kSize, callback.callback());
   EXPECT_EQ(0, callback.GetResult(ret));
 
   entry->Close();
 }