Fix AutocompleteMatch DCHECK() triggered by |RenderViewContextMenu::AppendSearchProvider()|.

chrome/browser/tab_contents/render_view_context_menu.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 <algorithm>
 #include <set>
+#include <utility>
 
 #include "chrome/browser/tab_contents/render_view_context_menu.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/stl_util.h"
 #include "base/string_util.h"
 #include "base/time.h"
 #include "base/utf_string_conversions.h"
@@ skipping 374 matching lines @@
     RecursivelyAppendExtensionItems(submenu_items, can_cross_incognito, submenu,
                                     index);
   }
   SetExtensionIcon(extension_id);
 }
 
 void RenderViewContextMenu::RecursivelyAppendExtensionItems(
     const ExtensionMenuItem::List& items,
     bool can_cross_incognito,
     ui::SimpleMenuModel* menu_model,
-    int *index) {
+    int* index) {
   string16 selection_text = PrintableSelectionText();
   ExtensionMenuItem::Type last_type = ExtensionMenuItem::NORMAL;
   int radio_group_id = 1;
 
   for (ExtensionMenuItem::List::const_iterator i = items.begin();
        i != items.end(); ++i) {
     ExtensionMenuItem* item = *i;
 
     // If last item was of type radio but the current one isn't, auto-insert
     // a separator.  The converse case is handled below.
@@ skipping 380 matching lines @@
                                   IDS_CONTENT_CONTEXT_COPY);
 }
 
 void RenderViewContextMenu::AppendSearchProvider() {
   DCHECK(profile_);
 
   TrimWhitespace(params_.selection_text, TRIM_ALL, &params_.selection_text);
   if (params_.selection_text.empty())
     return;
 
+  ReplaceChars(params_.selection_text, AutocompleteMatch::kInvalidChars,
+               ASCIIToUTF16(" "), &params_.selection_text);
+
   AutocompleteMatch match;
   profile_->GetAutocompleteClassifier()->Classify(
       params_.selection_text, string16(), false, false, &match, NULL);
   selection_navigation_url_ = match.destination_url;
   if (!selection_navigation_url_.is_valid())
     return;
 
   string16 printable_selection_text = PrintableSelectionText();
   // Escape "&" as "&&".
   for (size_t i = printable_selection_text.find('&'); i != string16::npos;
@@ skipping 1049 matching lines @@
       profile_->GetPrefs()->GetString(prefs::kAcceptLanguages),
       g_browser_process->clipboard());
 }
 
 void RenderViewContextMenu::MediaPlayerActionAt(
     const gfx::Point& location,
     const WebMediaPlayerAction& action) {
   source_tab_contents_->render_view_host()->
       ExecuteMediaPlayerActionAtLocation(location, action);
 }