Don't treat input with a scheme that's not "http" or "https" as a potential k...

chrome/browser/search_engines/template_url_model.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/search_engines/template_url_model.h"
 
 #include "app/l10n_util.h"
 #include "base/command_line.h"
 #include "base/environment.h"
 #include "base/stl_util-inl.h"
@@ skipping 113 matching lines @@
 
 // static
 std::wstring TemplateURLModel::CleanUserInputKeyword(
     const std::wstring& keyword) {
   // Remove the scheme.
   std::wstring result(UTF16ToWide(l10n_util::ToLower(WideToUTF16(keyword))));
   url_parse::Component scheme_component;
   if (url_parse::ExtractScheme(WideToUTF8(keyword).c_str(),
                                static_cast<int>(keyword.length()),
                                &scheme_component)) {
+    // If the scheme isn't "http" or "https", bail.  The user isn't trying to
+    // type a web address, but rather an FTP, file:, or other scheme URL, or a
+    // search query with some sort of initial operator (e.g. "site:").
+    if (result.compare(0, scheme_component.end(),
+                       ASCIIToWide(chrome::kHttpScheme)) &&
+        result.compare(0, scheme_component.end(),
+                       ASCIIToWide(chrome::kHttpsScheme)))
+      return std::wstring();
+
     // Include trailing ':'.
     result.erase(0, scheme_component.end() + 1);
     // Many schemes usually have "//" after them, so strip it too.
     const std::wstring after_scheme(L"//");
     if (result.compare(0, after_scheme.length(), after_scheme) == 0)
       result.erase(0, after_scheme.length());
   }
 
   // Remove leading "www.".
   result = net::StripWWW(result);
@@ skipping 858 matching lines @@
       something_changed = true;
     }
   }
 
   if (something_changed && loaded_) {
     provider_map_.UpdateGoogleBaseURLs();
     FOR_EACH_OBSERVER(TemplateURLModelObserver, model_observers_,
                       OnTemplateURLModelChanged());
   }
 }