Add net/base/filename_util.h.

net/base/net_util_win.cc

Index: net/base/net_util_win.cc
diff --git a/net/base/net_util_win.cc b/net/base/net_util_win.cc
index 14f3170dc3c3319545d8cbbf4f060b7ed6b431dd..c4cedee472079ae7b418f376fb016a175c185e3c 100644
--- a/net/base/net_util_win.cc
+++ b/net/base/net_util_win.cc
@@ -85,59 +85,6 @@ struct WlanApi {
 
 namespace net {
 
-bool FileURLToFilePath(const GURL& url, base::FilePath* file_path) {
-  *file_path = base::FilePath();
-  std::wstring& file_path_str = const_cast<std::wstring&>(file_path->value());
-  file_path_str.clear();
-
-  if (!url.is_valid())
-    return false;
-
-  std::string path;
-  std::string host = url.host();
-  if (host.empty()) {
-    // URL contains no host, the path is the filename. In this case, the path
-    // will probably be preceeded with a slash, as in "/C:/foo.txt", so we
-    // trim out that here.
-    path = url.path();
-    size_t first_non_slash = path.find_first_not_of("/\\");
-    if (first_non_slash != std::string::npos && first_non_slash > 0)
-      path.erase(0, first_non_slash);
-  } else {
-    // URL contains a host: this means it's UNC. We keep the preceeding slash
-    // on the path.
-    path = "\\\\";
-    path.append(host);
-    path.append(url.path());
-  }
-
-  if (path.empty())
-    return false;
-  std::replace(path.begin(), path.end(), '/', '\\');
-
-  // GURL stores strings as percent-encoded UTF-8, this will undo if possible.
-  path = UnescapeURLComponent(path,
-      UnescapeRule::SPACES | UnescapeRule::URL_SPECIAL_CHARS);
-
-  if (!IsStringUTF8(path)) {
-    // Not UTF-8, assume encoding is native codepage and we're done. We know we
-    // are giving the conversion function a nonempty string, and it may fail if
-    // the given string is not in the current encoding and give us an empty
-    // string back. We detect this and report failure.
-    file_path_str = base::SysNativeMBToWide(path);
-    return !file_path_str.empty();
-  }
-  file_path_str.assign(base::UTF8ToWide(path));
-
-  // We used to try too hard and see if |path| made up entirely of
-  // the 1st 256 characters in the Unicode was a zero-extended UTF-16.
-  // If so, we converted it to 'Latin-1' and checked if the result was UTF-8.
-  // If the check passed, we converted the result to UTF-8.
-  // Otherwise, we treated the result as the native OS encoding.
-  // However, that led to http://crbug.com/4619 and http://crbug.com/14153
-  return true;
-}
-
 bool GetNetworkList(NetworkInterfaceList* networks, int policy) {
   // GetAdaptersAddresses() may require IO operations.
   base::ThreadRestrictions::AssertIOAllowed();