Begun the DCHECK() cleanup. Starting off with /src/chrome/a* and /src/chrome/...

chrome/browser/autocomplete/history_provider.cc

 // Copyright (c) 2010 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 "chrome/browser/autocomplete/history_url_provider.h"
 
 #include <string>
 
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
@@ skipping 117 matching lines @@
   return output;
 }
 
 // static
 size_t HistoryProvider::TrimHttpPrefix(string16* url) {
   // Find any "http:".
   if (!HasHTTPScheme(*url))
     return 0;
   size_t scheme_pos =
       url->find(ASCIIToUTF16(chrome::kHttpScheme) + char16(':'));
-  DCHECK(scheme_pos != string16::npos);
+  DCHECK_NE(scheme_pos, string16::npos);
 
   // Erase scheme plus up to two slashes.
   size_t prefix_end = scheme_pos + strlen(chrome::kHttpScheme) + 1;
   const size_t after_slashes = std::min(url->length(), prefix_end + 2);
   while ((prefix_end < after_slashes) && ((*url)[prefix_end] == '/'))
     ++prefix_end;
   url->erase(scheme_pos, prefix_end - scheme_pos);
   return (scheme_pos == 0) ? prefix_end : 0;
 }