Remove useless compile assert.

net/base/mime_util.cc

 // Copyright (c) 2011 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 <map>
 #include <string>
 
 #include "net/base/mime_util.h"
 #include "net/base/platform_mime_util.h"
 
@@ skipping 254 matching lines @@
   "application/xhtml+xml",
   "application/rss+xml",
   "application/atom+xml",
   "application/json",
   "application/x-x509-user-cert",
   "multipart/related",  // For MHTML support.
   "multipart/x-mixed-replace"
   // Note: ADDING a new type here will probably render it AS HTML. This can
   // result in cross site scripting.
 };
-COMPILE_ASSERT(arraysize(supported_non_image_types) == 17,
-               supported_non_images_types_must_equal_17);
 
 //  Mozilla 1.8 and WinIE 7 both accept text/javascript and text/ecmascript.
 //  Mozilla 1.8 accepts application/javascript, application/ecmascript, and
 // application/x-javascript, but WinIE 7 doesn't.
 //  WinIE 7 accepts text/javascript1.1 - text/javascript1.3, text/jscript, and
 // text/livescript, but Mozilla 1.8 doesn't.
 //  Mozilla 1.8 allows leading and trailing whitespace, but WinIE 7 doesn't.
 //  Mozilla 1.8 and WinIE 7 both accept the empty string, but neither accept a
 // whitespace-only string.
 //  We want to accept all the values that either of these browsers accept, but
@@ skipping 422 matching lines @@
 
   GetExtensionsFromHardCodedMappings(secondary_mappings,
                                      arraysize(secondary_mappings),
                                      mime_type,
                                      &unique_extensions);
 
   HashSetToVector(&unique_extensions, extensions);
 }
 
 }  // namespace net