Omnibox: Preserve display text and select all on a focus search

components/omnibox/browser/omnibox_edit_model.h

 // Copyright 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.
 
 #ifndef COMPONENTS_OMNIBOX_BROWSER_OMNIBOX_EDIT_MODEL_H_
 #define COMPONENTS_OMNIBOX_BROWSER_OMNIBOX_EDIT_MODEL_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 159 matching lines @@
   bool CommitSuggestedText();
 
   // Invoked any time the text may have changed in the edit. Notifies the
   // controller.
   void OnChanged();
 
   // Reverts the edit model back to its unedited state (permanent text showing,
   // no user input in progress).
   void Revert();
 
-  // Directs the popup to start autocomplete.
+  // Directs the popup to start autocomplete.  Makes use of the |view_| text and
+  // selection, so make sure to set those before calling StartAutocomplete().
   void StartAutocomplete(bool has_selected_text,
                          bool prevent_inline_autocomplete);
 
   // Closes the popup and cancels any pending asynchronous queries.
   void StopAutocomplete();
 
   // Determines whether the user can "paste and go", given the specified text.
   bool CanPasteAndGo(const base::string16& text) const;
 
   // Navigates to the destination last supplied to CanPasteAndGo.
@@ skipping 46 matching lines @@
   bool is_keyword_selected() const {
     return !is_keyword_hint_ && !keyword_.empty();
   }
 
   // Accepts the current keyword hint as a keyword. It always returns true for
   // caller convenience. |entered_method| indicates how the user entered
   // keyword mode.
   bool AcceptKeyword(KeywordModeEntryMethod entry_method);
 
   // Sets the current keyword to that of the user's default search provider and
-  // updates the view so the user sees the keyword chip in the omnibox.
+  // updates the view so the user sees the keyword chip in the omnibox.  Adjusts
+  // user_text_ and the selection based on the display text and the keyword
+  // entry method.
   void EnterKeywordModeForDefaultSearchProvider(
       KeywordModeEntryMethod entry_method);
 
   // Accepts the current temporary text as the user text.
   void AcceptTemporaryTextAsUserText();
 
   // Clears the current keyword.
   void ClearKeyword();
 
   // Returns the current autocomplete result.  This logic should in the future
@@ skipping 311 matching lines @@
 
   // The input that was sent to the AutocompleteController. Since no
   // autocomplete query is started after a tab switch, it is possible for this
   // |input_| to differ from the one currently stored in AutocompleteController.
   AutocompleteInput input_;
 
   DISALLOW_COPY_AND_ASSIGN(OmniboxEditModel);
 };
 
 #endif  // COMPONENTS_OMNIBOX_BROWSER_OMNIBOX_EDIT_MODEL_H_