Revert of Move net::FormatUrl and friends outside of //net and into //components

components/url_formatter/url_fixer.cc

Index: components/url_formatter/url_fixer.cc
diff --git a/components/url_formatter/url_fixer.cc b/components/url_formatter/url_fixer.cc
deleted file mode 100644
index c49a902270143368308894d96dfc836d61b98de5..0000000000000000000000000000000000000000
--- a/components/url_formatter/url_fixer.cc
+++ /dev/null
@@ -1,673 +0,0 @@
-// 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 "components/url_formatter/url_fixer.h"
-
-#include <algorithm>
-
-#include "base/files/file_path.h"
-#include "base/files/file_util.h"
-#include "base/logging.h"
-#if defined(OS_POSIX)
-#include "base/path_service.h"
-#endif
-#include "base/strings/string_util.h"
-#include "base/strings/utf_string_conversions.h"
-#include "components/url_formatter/url_formatter.h"
-#include "net/base/escape.h"
-#include "net/base/filename_util.h"
-#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
-#include "url/third_party/mozilla/url_parse.h"
-#include "url/url_file.h"
-#include "url/url_util.h"
-
-namespace url_formatter {
-
-const char* home_directory_override = nullptr;
-
-namespace {
-
-// Hardcode these constants to avoid dependences on //chrome and //content.
-const char kChromeUIScheme[] = "chrome";
-const char kChromeUIDefaultHost[] = "version";
-const char kViewSourceScheme[] = "view-source";
-
-// TODO(estade): Remove these ugly, ugly functions. They are only used in
-// SegmentURL. A url::Parsed object keeps track of a bunch of indices into
-// a url string, and these need to be updated when the URL is converted from
-// UTF8 to UTF16. Instead of this after-the-fact adjustment, we should parse it
-// in the correct string format to begin with.
-url::Component UTF8ComponentToUTF16Component(
-    const std::string& text_utf8,
-    const url::Component& component_utf8) {
-  if (component_utf8.len == -1)
-    return url::Component();
-
-  std::string before_component_string =
-      text_utf8.substr(0, component_utf8.begin);
-  std::string component_string =
-      text_utf8.substr(component_utf8.begin, component_utf8.len);
-  base::string16 before_component_string_16 =
-      base::UTF8ToUTF16(before_component_string);
-  base::string16 component_string_16 = base::UTF8ToUTF16(component_string);
-  url::Component component_16(before_component_string_16.length(),
-                              component_string_16.length());
-  return component_16;
-}
-
-void UTF8PartsToUTF16Parts(const std::string& text_utf8,
-                           const url::Parsed& parts_utf8,
-                           url::Parsed* parts) {
-  if (base::IsStringASCII(text_utf8)) {
-    *parts = parts_utf8;
-    return;
-  }
-
-  parts->scheme = UTF8ComponentToUTF16Component(text_utf8, parts_utf8.scheme);
-  parts->username =
-      UTF8ComponentToUTF16Component(text_utf8, parts_utf8.username);
-  parts->password =
-      UTF8ComponentToUTF16Component(text_utf8, parts_utf8.password);
-  parts->host = UTF8ComponentToUTF16Component(text_utf8, parts_utf8.host);
-  parts->port = UTF8ComponentToUTF16Component(text_utf8, parts_utf8.port);
-  parts->path = UTF8ComponentToUTF16Component(text_utf8, parts_utf8.path);
-  parts->query = UTF8ComponentToUTF16Component(text_utf8, parts_utf8.query);
-  parts->ref = UTF8ComponentToUTF16Component(text_utf8, parts_utf8.ref);
-}
-
-base::TrimPositions TrimWhitespaceUTF8(const std::string& input,
-                                       base::TrimPositions positions,
-                                       std::string* output) {
-  // This implementation is not so fast since it converts the text encoding
-  // twice. Please feel free to file a bug if this function hurts the
-  // performance of Chrome.
-  DCHECK(base::IsStringUTF8(input));
-  base::string16 input16 = base::UTF8ToUTF16(input);
-  base::string16 output16;
-  base::TrimPositions result =
-      base::TrimWhitespace(input16, positions, &output16);
-  *output = base::UTF16ToUTF8(output16);
-  return result;
-}
-
-// does some basic fixes for input that we want to test for file-ness
-void PrepareStringForFileOps(const base::FilePath& text,
-                             base::FilePath::StringType* output) {
-#if defined(OS_WIN)
-  base::TrimWhitespace(text.value(), base::TRIM_ALL, output);
-  replace(output->begin(), output->end(), '/', '\\');
-#else
-  TrimWhitespaceUTF8(text.value(), base::TRIM_ALL, output);
-#endif
-}
-
-// Tries to create a full path from |text|.  If the result is valid and the
-// file exists, returns true and sets |full_path| to the result.  Otherwise,
-// returns false and leaves |full_path| unchanged.
-bool ValidPathForFile(const base::FilePath::StringType& text,
-                      base::FilePath* full_path) {
-  base::FilePath file_path = base::MakeAbsoluteFilePath(base::FilePath(text));
-  if (file_path.empty())
-    return false;
-
-  if (!base::PathExists(file_path))
-    return false;
-
-  *full_path = file_path;
-  return true;
-}
-
-#if defined(OS_POSIX)
-// Given a path that starts with ~, return a path that starts with an
-// expanded-out /user/foobar directory.
-std::string FixupHomedir(const std::string& text) {
-  DCHECK(text.length() > 0 && text[0] == '~');
-
-  if (text.length() == 1 || text[1] == '/') {
-    base::FilePath file_path;
-    if (home_directory_override)
-      file_path = base::FilePath(home_directory_override);
-    else
-      PathService::Get(base::DIR_HOME, &file_path);
-
-    // We'll probably break elsewhere if $HOME is undefined, but check here
-    // just in case.
-    if (file_path.value().empty())
-      return text;
-    // Append requires to be a relative path, so we have to cut all preceeding
-    // '/' characters.
-    size_t i = 1;
-    while (i < text.length() && text[i] == '/')
-      ++i;
-    return file_path.Append(text.substr(i)).value();
-  }
-
-// Otherwise, this is a path like ~foobar/baz, where we must expand to
-// user foobar's home directory.  Officially, we should use getpwent(),
-// but that is a nasty blocking call.
-
-#if defined(OS_MACOSX)
-  static const char kHome[] = "/Users/";
-#else
-  static const char kHome[] = "/home/";
-#endif
-  return kHome + text.substr(1);
-}
-#endif
-
-// Tries to create a file: URL from |text| if it looks like a filename, even if
-// it doesn't resolve as a valid path or to an existing file.  Returns a
-// (possibly invalid) file: URL in |fixed_up_url| for input beginning
-// with a drive specifier or "\\".  Returns the unchanged input in other cases
-// (including file: URLs: these don't look like filenames).
-std::string FixupPath(const std::string& text) {
-  DCHECK(!text.empty());
-
-  base::FilePath::StringType filename;
-#if defined(OS_WIN)
-  base::FilePath input_path(base::UTF8ToWide(text));
-  PrepareStringForFileOps(input_path, &filename);
-
-  // Fixup Windows-style drive letters, where "C:" gets rewritten to "C|".
-  if (filename.length() > 1 && filename[1] == '|')
-    filename[1] = ':';
-#elif defined(OS_POSIX)
-  base::FilePath input_path(text);
-  PrepareStringForFileOps(input_path, &filename);
-  if (filename.length() > 0 && filename[0] == '~')
-    filename = FixupHomedir(filename);
-#endif
-
-  // Here, we know the input looks like a file.
-  GURL file_url = net::FilePathToFileURL(base::FilePath(filename));
-  if (file_url.is_valid()) {
-    return base::UTF16ToUTF8(url_formatter::FormatUrl(
-        file_url, std::string(), url_formatter::kFormatUrlOmitUsernamePassword,
-        net::UnescapeRule::NORMAL, nullptr, nullptr, nullptr));
-  }
-
-  // Invalid file URL, just return the input.
-  return text;
-}
-
-// Checks |domain| to see if a valid TLD is already present.  If not, appends
-// |desired_tld| to the domain, and prepends "www." unless it's already present.
-void AddDesiredTLD(const std::string& desired_tld, std::string* domain) {
-  if (desired_tld.empty() || domain->empty())
-    return;
-
-  // Check the TLD.  If the return value is positive, we already have a TLD, so
-  // abort.  If the return value is std::string::npos, there's no valid host,
-  // but we can try to append a TLD anyway, since the host may become valid once
-  // the TLD is attached -- for example, "999999999999" is detected as a broken
-  // IP address and marked invalid, but attaching ".com" makes it legal.  When
-  // the return value is 0, there's a valid host with no known TLD, so we can
-  // definitely append the user's TLD.  We disallow unknown registries here so
-  // users can input "mail.yahoo" and hit ctrl-enter to get
-  // "www.mail.yahoo.com".
-  const size_t registry_length =
-      net::registry_controlled_domains::GetRegistryLength(
-          *domain, net::registry_controlled_domains::EXCLUDE_UNKNOWN_REGISTRIES,
-          net::registry_controlled_domains::EXCLUDE_PRIVATE_REGISTRIES);
-  if ((registry_length != 0) && (registry_length != std::string::npos))
-    return;
-
-  // Add the suffix at the end of the domain.
-  const size_t domain_length(domain->length());
-  DCHECK_GT(domain_length, 0U);
-  DCHECK_NE(desired_tld[0], '.');
-  if ((*domain)[domain_length - 1] != '.')
-    domain->push_back('.');
-  domain->append(desired_tld);
-
-  // Now, if the domain begins with "www.", stop.
-  const std::string prefix("www.");
-  if (domain->compare(0, prefix.length(), prefix) != 0) {
-    // Otherwise, add www. to the beginning of the URL.
-    domain->insert(0, prefix);
-  }
-}
-
-inline void FixupUsername(const std::string& text,
-                          const url::Component& part,
-                          std::string* url) {
-  if (!part.is_valid())
-    return;
-
-  // We don't fix up the username at the moment.
-  url->append(text, part.begin, part.len);
-  // Do not append the trailing '@' because we might need to include the user's
-  // password.  FixupURL itself will append the '@' for us.
-}
-
-inline void FixupPassword(const std::string& text,
-                          const url::Component& part,
-                          std::string* url) {
-  if (!part.is_valid())
-    return;
-
-  // We don't fix up the password at the moment.
-  url->append(":");
-  url->append(text, part.begin, part.len);
-}
-
-void FixupHost(const std::string& text,
-               const url::Component& part,
-               bool has_scheme,
-               const std::string& desired_tld,
-               std::string* url) {
-  if (!part.is_valid())
-    return;
-
-  // Make domain valid.
-  // Strip all leading dots and all but one trailing dot, unless the user only
-  // typed dots, in which case their input is totally invalid and we should just
-  // leave it unchanged.
-  std::string domain(text, part.begin, part.len);
-  const size_t first_nondot(domain.find_first_not_of('.'));
-  if (first_nondot != std::string::npos) {
-    domain.erase(0, first_nondot);
-    size_t last_nondot(domain.find_last_not_of('.'));
-    DCHECK(last_nondot != std::string::npos);
-    last_nondot += 2;  // Point at second period in ending string
-    if (last_nondot < domain.length())
-      domain.erase(last_nondot);
-  }
-
-  // Add any user-specified TLD, if applicable.
-  AddDesiredTLD(desired_tld, &domain);
-
-  url->append(domain);
-}
-
-void FixupPort(const std::string& text,
-               const url::Component& part,
-               std::string* url) {
-  if (!part.is_valid())
-    return;
-
-  // We don't fix up the port at the moment.
-  url->append(":");
-  url->append(text, part.begin, part.len);
-}
-
-inline void FixupPath(const std::string& text,
-                      const url::Component& part,
-                      std::string* url) {
-  if (!part.is_valid() || part.len == 0) {
-    // We should always have a path.
-    url->append("/");
-    return;
-  }
-
-  // Append the path as is.
-  url->append(text, part.begin, part.len);
-}
-
-inline void FixupQuery(const std::string& text,
-                       const url::Component& part,
-                       std::string* url) {
-  if (!part.is_valid())
-    return;
-
-  // We don't fix up the query at the moment.
-  url->append("?");
-  url->append(text, part.begin, part.len);
-}
-
-inline void FixupRef(const std::string& text,
-                     const url::Component& part,
-                     std::string* url) {
-  if (!part.is_valid())
-    return;
-
-  // We don't fix up the ref at the moment.
-  url->append("#");
-  url->append(text, part.begin, part.len);
-}
-
-bool HasPort(const std::string& original_text,
-             const url::Component& scheme_component) {
-  // Find the range between the ":" and the "/".
-  size_t port_start = scheme_component.end() + 1;
-  size_t port_end = port_start;
-  while ((port_end < original_text.length()) &&
-         !url::IsAuthorityTerminator(original_text[port_end]))
-    ++port_end;
-  if (port_end == port_start)
-    return false;
-
-  // Scan the range to see if it is entirely digits.
-  for (size_t i = port_start; i < port_end; ++i) {
-    if (!base::IsAsciiDigit(original_text[i]))
-      return false;
-  }
-
-  return true;
-}
-
-// Try to extract a valid scheme from the beginning of |text|.
-// If successful, set |scheme_component| to the text range where the scheme
-// was located, and fill |canon_scheme| with its canonicalized form.
-// Otherwise, return false and leave the outputs in an indeterminate state.
-bool GetValidScheme(const std::string& text,
-                    url::Component* scheme_component,
-                    std::string* canon_scheme) {
-  canon_scheme->clear();
-
-  // Locate everything up to (but not including) the first ':'
-  if (!url::ExtractScheme(text.data(), static_cast<int>(text.length()),
-                          scheme_component)) {
-    return false;
-  }
-
-  // Make sure the scheme contains only valid characters, and convert
-  // to lowercase.  This also catches IPv6 literals like [::1], because
-  // brackets are not in the whitelist.
-  url::StdStringCanonOutput canon_scheme_output(canon_scheme);
-  url::Component canon_scheme_component;
-  if (!url::CanonicalizeScheme(text.data(), *scheme_component,
-                               &canon_scheme_output, &canon_scheme_component)) {
-    return false;
-  }
-
-  // Strip the ':', and any trailing buffer space.
-  DCHECK_EQ(0, canon_scheme_component.begin);
-  canon_scheme->erase(canon_scheme_component.len);
-
-  // We need to fix up the segmentation for "www.example.com:/".  For this
-  // case, we guess that schemes with a "." are not actually schemes.
-  if (canon_scheme->find('.') != std::string::npos)
-    return false;
-
-  // We need to fix up the segmentation for "www:123/".  For this case, we
-  // will add an HTTP scheme later and make the URL parser happy.
-  // TODO(pkasting): Maybe we should try to use GURL's parser for this?
-  if (HasPort(text, *scheme_component))
-    return false;
-
-  // Everything checks out.
-  return true;
-}
-
-// Performs the work for url_formatter::SegmentURL. |text| may be modified on
-// output on success: a semicolon following a valid scheme is replaced with a
-// colon.
-std::string SegmentURLInternal(std::string* text, url::Parsed* parts) {
-  // Initialize the result.
-  *parts = url::Parsed();
-
-  std::string trimmed;
-  TrimWhitespaceUTF8(*text, base::TRIM_ALL, &trimmed);
-  if (trimmed.empty())
-    return std::string();  // Nothing to segment.
-
-#if defined(OS_WIN)
-  int trimmed_length = static_cast<int>(trimmed.length());
-  if (url::DoesBeginWindowsDriveSpec(trimmed.data(), 0, trimmed_length) ||
-      url::DoesBeginUNCPath(trimmed.data(), 0, trimmed_length, true))
-    return "file";
-#elif defined(OS_POSIX)
-  if (base::FilePath::IsSeparator(trimmed.data()[0]) ||
-      trimmed.data()[0] == '~')
-    return "file";
-#endif
-
-  // Otherwise, we need to look at things carefully.
-  std::string scheme;
-  if (!GetValidScheme(*text, &parts->scheme, &scheme)) {
-    // Try again if there is a ';' in the text. If changing it to a ':' results
-    // in a scheme being found, continue processing with the modified text.
-    bool found_scheme = false;
-    size_t semicolon = text->find(';');
-    if (semicolon != 0 && semicolon != std::string::npos) {
-      (*text)[semicolon] = ':';
-      if (GetValidScheme(*text, &parts->scheme, &scheme))
-        found_scheme = true;
-      else
-        (*text)[semicolon] = ';';
-    }
-    if (!found_scheme) {
-      // Couldn't determine the scheme, so just pick one.
-      parts->scheme.reset();
-      scheme =
-          base::StartsWith(*text, "ftp.", base::CompareCase::INSENSITIVE_ASCII)
-              ? url::kFtpScheme
-              : url::kHttpScheme;
-    }
-  }
-
-  // Proceed with about and chrome schemes, but not file or nonstandard schemes.
-  if ((scheme != url::kAboutScheme) && (scheme != kChromeUIScheme) &&
-      ((scheme == url::kFileScheme) ||
-       !url::IsStandard(
-           scheme.c_str(),
-           url::Component(0, static_cast<int>(scheme.length()))))) {
-    return scheme;
-  }
-
-  if (scheme == url::kFileSystemScheme) {
-    // Have the GURL parser do the heavy lifting for us.
-    url::ParseFileSystemURL(text->data(), static_cast<int>(text->length()),
-                            parts);
-    return scheme;
-  }
-
-  if (parts->scheme.is_valid()) {
-    // Have the GURL parser do the heavy lifting for us.
-    url::ParseStandardURL(text->data(), static_cast<int>(text->length()),
-                          parts);
-    return scheme;
-  }
-
-  // We need to add a scheme in order for ParseStandardURL to be happy.
-  // Find the first non-whitespace character.
-  std::string::iterator first_nonwhite = text->begin();
-  while ((first_nonwhite != text->end()) &&
-         base::IsUnicodeWhitespace(*first_nonwhite))
-    ++first_nonwhite;
-
-  // Construct the text to parse by inserting the scheme.
-  std::string inserted_text(scheme);
-  inserted_text.append(url::kStandardSchemeSeparator);
-  std::string text_to_parse(text->begin(), first_nonwhite);
-  text_to_parse.append(inserted_text);
-  text_to_parse.append(first_nonwhite, text->end());
-
-  // Have the GURL parser do the heavy lifting for us.
-  url::ParseStandardURL(text_to_parse.data(),
-                        static_cast<int>(text_to_parse.length()), parts);
-
-  // Offset the results of the parse to match the original text.
-  const int offset = -static_cast<int>(inserted_text.length());
-  OffsetComponent(offset, &parts->scheme);
-  OffsetComponent(offset, &parts->username);
-  OffsetComponent(offset, &parts->password);
-  OffsetComponent(offset, &parts->host);
-  OffsetComponent(offset, &parts->port);
-  OffsetComponent(offset, &parts->path);
-  OffsetComponent(offset, &parts->query);
-  OffsetComponent(offset, &parts->ref);
-
-  return scheme;
-}
-
-}  // namespace
-
-std::string SegmentURL(const std::string& text, url::Parsed* parts) {
-  std::string mutable_text(text);
-  return SegmentURLInternal(&mutable_text, parts);
-}
-
-base::string16 SegmentURL(const base::string16& text, url::Parsed* parts) {
-  std::string text_utf8 = base::UTF16ToUTF8(text);
-  url::Parsed parts_utf8;
-  std::string scheme_utf8 = SegmentURL(text_utf8, &parts_utf8);
-  UTF8PartsToUTF16Parts(text_utf8, parts_utf8, parts);
-  return base::UTF8ToUTF16(scheme_utf8);
-}
-
-GURL FixupURL(const std::string& text, const std::string& desired_tld) {
-  std::string trimmed;
-  TrimWhitespaceUTF8(text, base::TRIM_ALL, &trimmed);
-  if (trimmed.empty())
-    return GURL();  // Nothing here.
-
-  // Segment the URL.
-  url::Parsed parts;
-  std::string scheme(SegmentURLInternal(&trimmed, &parts));
-
-  // For view-source: URLs, we strip "view-source:", do fixup, and stick it back
-  // on.  This allows us to handle things like "view-source:google.com".
-  if (scheme == kViewSourceScheme) {
-    // Reject "view-source:view-source:..." to avoid deep recursion.
-    std::string view_source(kViewSourceScheme + std::string(":"));
-    if (!base::StartsWith(text, view_source + view_source,
-                          base::CompareCase::INSENSITIVE_ASCII)) {
-      return GURL(kViewSourceScheme + std::string(":") +
-                  FixupURL(trimmed.substr(scheme.length() + 1), desired_tld)
-                      .possibly_invalid_spec());
-    }
-  }
-
-  // We handle the file scheme separately.
-  if (scheme == url::kFileScheme)
-    return GURL(parts.scheme.is_valid() ? text : FixupPath(text));
-
-  // We handle the filesystem scheme separately.
-  if (scheme == url::kFileSystemScheme) {
-    if (parts.inner_parsed() && parts.inner_parsed()->scheme.is_valid())
-      return GURL(text);
-    return GURL();
-  }
-
-  // Parse and rebuild about: and chrome: URLs, except about:blank.
-  bool chrome_url =
-      !base::LowerCaseEqualsASCII(trimmed, url::kAboutBlankURL) &&
-      ((scheme == url::kAboutScheme) || (scheme == kChromeUIScheme));
-
-  // For some schemes whose layouts we understand, we rebuild it.
-  if (chrome_url ||
-      url::IsStandard(scheme.c_str(),
-                      url::Component(0, static_cast<int>(scheme.length())))) {
-    // Replace the about: scheme with the chrome: scheme.
-    std::string url(chrome_url ? kChromeUIScheme : scheme);
-    url.append(url::kStandardSchemeSeparator);
-
-    // We need to check whether the |username| is valid because it is our
-    // responsibility to append the '@' to delineate the user information from
-    // the host portion of the URL.
-    if (parts.username.is_valid()) {
-      FixupUsername(trimmed, parts.username, &url);
-      FixupPassword(trimmed, parts.password, &url);
-      url.append("@");
-    }
-
-    FixupHost(trimmed, parts.host, parts.scheme.is_valid(), desired_tld, &url);
-    if (chrome_url && !parts.host.is_valid())
-      url.append(kChromeUIDefaultHost);
-    FixupPort(trimmed, parts.port, &url);
-    FixupPath(trimmed, parts.path, &url);
-    FixupQuery(trimmed, parts.query, &url);
-    FixupRef(trimmed, parts.ref, &url);
-
-    return GURL(url);
-  }
-
-  // In the worst-case, we insert a scheme if the URL lacks one.
-  if (!parts.scheme.is_valid()) {
-    std::string fixed_scheme(scheme);
-    fixed_scheme.append(url::kStandardSchemeSeparator);
-    trimmed.insert(0, fixed_scheme);
-  }
-
-  return GURL(trimmed);
-}
-
-// The rules are different here than for regular fixup, since we need to handle
-// input like "hello.html" and know to look in the current directory.  Regular
-// fixup will look for cues that it is actually a file path before trying to
-// figure out what file it is.  If our logic doesn't work, we will fall back on
-// regular fixup.
-GURL FixupRelativeFile(const base::FilePath& base_dir,
-                       const base::FilePath& text) {
-  base::FilePath old_cur_directory;
-  if (!base_dir.empty()) {
-    // Save the old current directory before we move to the new one.
-    base::GetCurrentDirectory(&old_cur_directory);
-    base::SetCurrentDirectory(base_dir);
-  }
-
-  // Allow funny input with extra whitespace and the wrong kind of slashes.
-  base::FilePath::StringType trimmed;
-  PrepareStringForFileOps(text, &trimmed);
-
-  bool is_file = true;
-  // Avoid recognizing definite non-file URLs as file paths.
-  GURL gurl(trimmed);
-  if (gurl.is_valid() && gurl.IsStandard())
-    is_file = false;
-  base::FilePath full_path;
-  if (is_file && !ValidPathForFile(trimmed, &full_path)) {
-// Not a path as entered, try unescaping it in case the user has
-// escaped things. We need to go through 8-bit since the escaped values
-// only represent 8-bit values.
-#if defined(OS_WIN)
-    std::wstring unescaped = base::UTF8ToWide(net::UnescapeURLComponent(
-        base::WideToUTF8(trimmed),
-        net::UnescapeRule::SPACES | net::UnescapeRule::URL_SPECIAL_CHARS));
-#elif defined(OS_POSIX)
-    std::string unescaped = net::UnescapeURLComponent(
-        trimmed,
-        net::UnescapeRule::SPACES | net::UnescapeRule::URL_SPECIAL_CHARS);
-#endif
-
-    if (!ValidPathForFile(unescaped, &full_path))
-      is_file = false;
-  }
-
-  // Put back the current directory if we saved it.
-  if (!base_dir.empty())
-    base::SetCurrentDirectory(old_cur_directory);
-
-  if (is_file) {
-    GURL file_url = net::FilePathToFileURL(full_path);
-    if (file_url.is_valid())
-      return GURL(base::UTF16ToUTF8(url_formatter::FormatUrl(
-          file_url, std::string(),
-          url_formatter::kFormatUrlOmitUsernamePassword,
-          net::UnescapeRule::NORMAL, nullptr, nullptr, nullptr)));
-    // Invalid files fall through to regular processing.
-  }
-
-// Fall back on regular fixup for this input.
-#if defined(OS_WIN)
-  std::string text_utf8 = base::WideToUTF8(text.value());
-#elif defined(OS_POSIX)
-  std::string text_utf8 = text.value();
-#endif
-  return FixupURL(text_utf8, std::string());
-}
-
-void OffsetComponent(int offset, url::Component* part) {
-  DCHECK(part);
-
-  if (part->is_valid()) {
-    // Offset the location of this component.
-    part->begin += offset;
-
-    // This part might not have existed in the original text.
-    if (part->begin < 0)
-      part->reset();
-  }
-}
-
-bool IsEquivalentScheme(const std::string& scheme1,
-                        const std::string& scheme2) {
-  return scheme1 == scheme2 ||
-         (scheme1 == url::kAboutScheme && scheme2 == kChromeUIScheme) ||
-         (scheme1 == kChromeUIScheme && scheme2 == url::kAboutScheme);
-}
-
-}  // namespace url_formatter