Interpret '?' and Ctrl-K or Ctrl-E as putting omnibox in keyword search mode for Default Search Pro…

components/omnibox/browser/history_url_provider.cc

 // 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/omnibox/browser/history_url_provider.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 453 matching lines @@
   // doing this (we can't just write new data for it to read due to thread
   // safety issues).  At that point it's just as fast, and easier, to simply
   // re-run the query from scratch and ignore |minimal_changes|.
 
   // Cancel any in-progress query.
   Stop(false, false);
 
   matches_.clear();
 
   if (input.from_omnibox_focus() ||
-      (input.type() == metrics::OmniboxInputType::INVALID) ||
-      (input.type() == metrics::OmniboxInputType::FORCED_QUERY))
+      (input.type() == metrics::OmniboxInputType::INVALID))
     return;
 
   // Do some fixup on the user input before matching against it, so we provide
   // good results for local file paths, input with spaces, etc.
   const FixupReturn fixup_return(FixupUserInput(input));
   if (!fixup_return.first)
     return;
   url::Parsed parts;
   url_formatter::SegmentURL(fixup_return.second, &parts);
   AutocompleteInput fixed_up_input(input);
@@ skipping 706 matching lines @@
     AutocompleteMatch::ClassifyLocationInString(base::string16::npos, 0,
         match.contents.length(), ACMatchClassification::URL,
         &match.contents_class);
   }
   match.description = info.title();
   match.description_class =
       ClassifyDescription(params.input.text(), match.description);
   RecordAdditionalInfoFromUrlRow(info, &match);
   return match;
 }