Preload Instant search when omnibox is focused.

chrome/browser/instant/instant_loader.h

 // 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.
 
 #ifndef CHROME_BROWSER_INSTANT_INSTANT_LOADER_H_
 #define CHROME_BROWSER_INSTANT_INSTANT_LOADER_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 51 matching lines @@
 
   // Releases the preview TabContents passing ownership to the caller. This is
   // intended to be called when the preview TabContents is committed. This does
   // not notify the delegate.
   TabContentsWrapper* ReleasePreviewContents(InstantCommitType type);
 
   // Calls through to method of same name on delegate.
   bool ShouldCommitInstantOnMouseUp();
   void CommitInstantLoader();
 
+  // Preload |template_url|'s instant URL, if the loader doesn't already have
+  // a |preview_contents()| for it.
+  void MaybeLoadInstantURL(TabContentsWrapper* tab_contents,
+                           const TemplateURL* template_url);
+
   // NotificationObserver:
   virtual void Observe(NotificationType type,
                        const NotificationSource& source,
                        const NotificationDetails& details) OVERRIDE;
 
   // The preview TabContents; may be null.
   TabContentsWrapper* preview_contents() const {
     return preview_contents_.get();
   }
 
@@ skipping 64 matching lines @@
   void ProcessBoundsChange();
 
   // Notifes the page of the omnibox bounds. If |force_if_loading| is true the
   // bounds are sent down even if we're waiting on the load, otherwise if we're
   // waiting on the load and |force_if_loading| is false this does nothing.
   void SendBoundsToPage(bool force_if_loading);
 
   // Creates and sets the preview TabContentsWrapper.
   void CreatePreviewContents(TabContentsWrapper* tab_contents);
 
+  // Creates and loads the |template_url|'s instant URL.
+  void LoadInstantURL(TabContentsWrapper* tab_contents,
+                      const TemplateURL* template_url,
+                      PageTransition::Type transition_type,
+                      const string16& user_text,
+                      bool verbatim);
+
   InstantLoaderDelegate* delegate_;
 
   // If we're showing instant results this is the ID of the TemplateURL driving
   // the results. A value of 0 means there is no TemplateURL.
   const TemplateURLID template_url_id_;
 
   // The url we're displaying.
   GURL url_;
 
   // Delegate of the preview TabContents. Used to detect when the user does some
@@ skipping 38 matching lines @@
   // Last value of verbatim passed to |Update|.
   bool verbatim_;
 
   // True if the page needs to be reloaded.
   bool needs_reload_;
 
   DISALLOW_COPY_AND_ASSIGN(InstantLoader);
 };
 
 #endif  // CHROME_BROWSER_INSTANT_INSTANT_LOADER_H_