Preload Instant search when omnibox is focused.

chrome/browser/instant/instant_controller.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/instant/instant_controller.h"
 
 #include "base/command_line.h"
 #include "base/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "build/build_config.h"
@@ skipping 683 matching lines @@
     const AutocompleteMatch& match) {
   const TemplateURL* template_url = match.template_url;
   if (match.type == AutocompleteMatch::SEARCH_WHAT_YOU_TYPED ||
       match.type == AutocompleteMatch::SEARCH_HISTORY ||
       match.type == AutocompleteMatch::SEARCH_SUGGEST) {
     TemplateURLModel* model = tab_contents_->profile()->GetTemplateURLModel();
     template_url = model ? model->GetDefaultSearchProvider() : NULL;
   }
   return template_url;
 }
+
+void InstantController::OnAutocompleteGotFocus(

[sky, 2011/05/20 20:52:18]

Position should match that of header.

[sreeram, 2011/05/21 03:18:27]

Done.

+    TabContentsWrapper* tab_contents) {
+  TemplateURLModel* model = tab_contents->profile()->GetTemplateURLModel();

[sky, 2011/05/20 20:52:18]

This should do nothing if is_active_ is true.
This needs to check the TabContents, and update appropriately. 

[sreeram, 2011/05/21 03:18:27]

Done.

+  if (model) {
+    const TemplateURL* template_url = model->GetDefaultSearchProvider();
+    if (template_url) {
+      if (!loader_manager_.get())
+        loader_manager_.reset(new InstantLoaderManager(this));
+      loader_manager_->GetInstantLoader(template_url->id())
+                     ->MaybeLoadInstantURL(tab_contents, template_url);
+    }
+  }
+}