Treat files downloaded from the address bar as "always safe" (including extensions per discussion...

chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h"
 
 #include "base/stl_util.h"
 #include "base/string_util.h"
 #include "base/sys_string_conversions.h"
 #include "base/utf_string_conversions.h"
@@ skipping 73 matching lines @@
           new SelectedKeywordDecoration(OmniboxViewMac::GetFieldFont())),
       ev_bubble_decoration_(
           new EVBubbleDecoration(location_icon_decoration_.get(),
                                  OmniboxViewMac::GetFieldFont())),
       star_decoration_(new StarDecoration(command_updater)),
       keyword_hint_decoration_(
           new KeywordHintDecoration(OmniboxViewMac::GetFieldFont())),
       profile_(profile),
       browser_(browser),
       toolbar_model_(toolbar_model),
-      transition_(PageTransition::TYPED),
+      transition_(PageTransition::TYPED | PageTransition::FROM_ADDRESS_BAR),
       first_run_bubble_(this) {
   for (size_t i = 0; i < CONTENT_SETTINGS_NUM_TYPES; ++i) {
     DCHECK_EQ(i, content_setting_decorations_.size());
     ContentSettingsType type = static_cast<ContentSettingsType>(i);
     content_setting_decorations_.push_back(
         new ContentSettingDecoration(type, this, profile_));
   }
 
   registrar_.Add(this,
       chrome::NOTIFICATION_EXTENSION_PAGE_ACTION_VISIBILITY_CHANGED,
@@ skipping 114 matching lines @@
 
 void LocationBarViewMac::OnAutocompleteAccept(const GURL& url,
                                               WindowOpenDisposition disposition,
                                               PageTransition::Type transition,
                                               const GURL& alternate_nav_url) {
   // WARNING: don't add an early return here. The calls after the if must
   // happen.
   if (url.is_valid()) {
     location_input_ = UTF8ToUTF16(url.spec());
     disposition_ = disposition;
-    transition_ = transition;
+    transition_ = transition | PageTransition::FROM_ADDRESS_BAR;
 
     if (command_updater_) {
       if (!alternate_nav_url.is_valid()) {
         command_updater_->ExecuteCommand(IDC_OPEN_CURRENT_URL);
       } else {
         AlternateNavURLFetcher* fetcher =
             new AlternateNavURLFetcher(alternate_nav_url);
         // The AlternateNavURLFetcher will listen for the pending navigation
         // notification that will be issued as a result of the "open URL." It
         // will automatically install itself into that navigation controller.
@@ skipping 397 matching lines @@
 
   [field_ setNeedsDisplay:YES];
 }
 
 bool LocationBarViewMac::IsStarEnabled() {
   return [field_ isEditable] &&
          browser_defaults::bookmarks_enabled &&
          !toolbar_model_->input_in_progress() &&
          edit_bookmarks_enabled_.GetValue();
 }