Add a flag that lets the webstore show a different UI on app install.

chrome/browser/ui/views/tabs/side_tab_strip.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 "chrome/browser/ui/views/tabs/side_tab_strip.h"
 
 #include "chrome/browser/tabs/tab_strip_selection_model.h"
 #include "chrome/browser/ui/view_ids.h"
 #include "chrome/browser/ui/views/tabs/side_tab.h"
 #include "chrome/browser/ui/views/tabs/tab_strip_controller.h"
@@ skipping 137 matching lines @@
 ////////////////////////////////////////////////////////////////////////////////
 // SideTabStrip, AbstractTabStripView implementation:
 
 bool SideTabStrip::IsPositionInWindowCaption(const gfx::Point& point) {
   return GetEventHandlerForPoint(point) == this;
 }
 
 void SideTabStrip::SetBackgroundOffset(const gfx::Point& offset) {
 }
 
+views::View* SideTabStrip::GetNewTabButton() {
+  return newtab_button_;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // SideTabStrip, BaseTabStrip implementation:
 
 void SideTabStrip::StartHighlight(int model_index) {
 }
 
 void SideTabStrip::StopAllHighlighting() {
 }
 
 BaseTab* SideTabStrip::CreateTabForDragging() {
@@ skipping 291 matching lines @@
     return;
 
   if (ideal_bounds(tab_index).y() < kTabStripInset) {
     SetFirstTabYOffset(first_tab_y_offset_ - ideal_bounds(tab_index).y() +
                        kTabStripInset);
   } else if (ideal_bounds(tab_index).bottom() > GetMaxTabY()) {
     SetFirstTabYOffset(GetMaxTabY() - (ideal_bounds(tab_index).bottom() -
                                        first_tab_y_offset_));
   }
 }