Tapping on omnibox should select all text.

chrome/browser/ui/views/omnibox/omnibox_view_views.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_OMNIBOX_OMNIBOX_VIEW_VIEWS_H_
 #define CHROME_BROWSER_UI_VIEWS_OMNIBOX_OMNIBOX_VIEW_VIEWS_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 56 matching lines @@
 
   // Called when KeyRelease event is generated on textfield.
   bool HandleKeyReleaseEvent(const ui::KeyEvent& event);
 
   // Called when mouse events are generated on the textfield.
   // The views::Textfield implementations will be executed first.
   void HandleMousePressEvent(const ui::MouseEvent& event);
   void HandleMouseDragEvent(const ui::MouseEvent& event);
   void HandleMouseReleaseEvent(const ui::MouseEvent& event);
 
+  // Called when a gesture event is generated on textfield.
+  void HandleGestureEvent(const ui::GestureEvent& event);
+
   // Called when Focus is set/unset on textfield.
   void HandleFocusIn();
   void HandleFocusOut();
 
   // Sets whether the location entry can accept focus.
   void SetLocationEntryFocusable(bool focusable);
 
   // Returns true if the location entry is focusable and visible in
   // the root view.
   bool IsLocationEntryFocusableInRootView() const;
@@ skipping 125 matching lines @@
   // avoid showing the popup. So far, the candidate window is detected only
   // on Chrome OS.
   bool ime_candidate_window_open_;
 
   // Should we select all the text when we see the mouse button get released?
   // We select in response to a click that focuses the omnibox, but we defer
   // until release, setting this variable back to false if we saw a drag, to
   // allow the user to select just a portion of the text.
   bool select_all_on_mouse_release_;
 
+  // Indicates if we want to select all text in the omnibox when we get a
+  // GESTURE_TAP. We want to select all only when the textfield is not in focus
+  // and gets a tap. So we use this variable to remember focus state before tap.
+  bool select_all_on_gesture_tap_;
+
   DISALLOW_COPY_AND_ASSIGN(OmniboxViewViews);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_OMNIBOX_OMNIBOX_VIEW_VIEWS_H_