Be a little more careful whether something is an URL or a file path.

chrome/browser/net/url_fixer_upper.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 "chrome/browser/net/url_fixer_upper.h"
 
 #include <algorithm>
 
 #if defined(OS_POSIX)
 #include "base/environment.h"
@@ skipping 520 matching lines @@
     // Save the old current directory before we move to the new one.
     file_util::GetCurrentDirectory(&old_cur_directory);
     file_util::SetCurrentDirectory(base_dir);
   }
 
   // Allow funny input with extra whitespace and the wrong kind of slashes.
   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;
   FilePath full_path;
-  if (!ValidPathForFile(trimmed, &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 = UTF8ToWide(UnescapeURLComponent(
         WideToUTF8(trimmed),
         UnescapeRule::SPACES | UnescapeRule::URL_SPECIAL_CHARS));
 #elif defined(OS_POSIX)
     std::string unescaped = UnescapeURLComponent(
         trimmed,
@@ skipping 40 matching lines @@
 
   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();
   }
 }