Implement HTML selects as native Cocoa controls for Chrome

chrome/browser/tab_contents/tab_contents_view_mac.mm

 // Copyright (c) 2006-2008 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/tab_contents/tab_contents_view_mac.h"
 
 #include "chrome/browser/browser.h" // TODO(beng): this dependency is awful.
 #include "chrome/browser/cocoa/sad_tab_view.h"
 #include "chrome/browser/renderer_host/render_widget_host.h"
 #include "chrome/browser/renderer_host/render_widget_host_view_mac.h"
@@ skipping 130 matching lines @@
     int route_id,
     bool activatable) {
   // A RenderWidgetHostViewMac has lifetime scoped to the view. We'll retain it
   // to allow it to survive the trip without being hosted.
   RenderWidgetHostView* widget_view =
       TabContentsView::CreateNewWidgetInternal(route_id, activatable);
   RenderWidgetHostViewMac* widget_view_mac =
       static_cast<RenderWidgetHostViewMac*>(widget_view);
   [widget_view_mac->native_view() retain];
 
+  // |widget_view_mac| needs to know how to position itself in our view.
+  widget_view_mac->set_parent_view(cocoa_view_);
+
   return widget_view;
 }
 
 void TabContentsViewMac::ShowCreatedWidgetInternal(
     RenderWidgetHostView* widget_host_view,
     const gfx::Rect& initial_pos) {
   TabContentsView::ShowCreatedWidgetInternal(widget_host_view, initial_pos);
 
   // A RenderWidgetHostViewMac has lifetime scoped to the view. Now that it's
   // properly embedded (or purposefully ignored) we can release the retain we
@@ skipping 70 matching lines @@
 }
 
 - (void)paste:(id)sender {
   TabContentsView_->web_contents()->Paste();
 }
 
 // Tons of stuff goes here, where we grab events going on in Cocoaland and send
 // them into the C++ system. TODO(avi): all that jazz
 
 @end