Instant: Use only one hidden WebContents per profile.

chrome/common/chrome_notification_types.h

 // Copyright 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_COMMON_CHROME_NOTIFICATION_TYPES_H_
 #define CHROME_COMMON_CHROME_NOTIFICATION_TYPES_H_
 
 #include "build/build_config.h"
 #include "content/public/browser/notification_types.h"
 
@@ skipping 1079 matching lines @@
   NOTIFICATION_TAB_DRAG_LOOP_DONE,
 #endif
 
   // Send when a context menu is shown. Used to notify tests that the context
   // menu has been created and shown.
   NOTIFICATION_RENDER_VIEW_CONTEXT_MENU_SHOWN,
 
   // Send when a context menu is closed.
   NOTIFICATION_RENDER_VIEW_CONTEXT_MENU_CLOSED,
 
-  // Sent each time the InstantController is updated.
-  NOTIFICATION_INSTANT_CONTROLLER_UPDATED,
+  // Sent each time a search query is sent to an Instant page.
+  NOTIFICATION_INSTANT_UPDATED,
 
-  // Sent when an Instant preview is committed. The Source is the WebContents
-  // containing the committed preview.
+  // Sent when an Instant overlay is committed. The Source is the WebContents
+  // containing the committed overlay.
   NOTIFICATION_INSTANT_COMMITTED,
 
-  // Sent when the Instant Controller determines whether the overlay supports
-  // the Instant API or not.
-  NOTIFICATION_INSTANT_OVERLAY_SUPPORT_DETERMINED,
-
-  // Sent when the Instant Controller determines whether the NTP supports the
-  // Instant API or not.
-  NOTIFICATION_INSTANT_NTP_SUPPORT_DETERMINED,
-
-  // Sent when the Instant Controller has sent the Most Visited Items to the
-  // renderer.
-  NOTIFICATION_INSTANT_SENT_MOST_VISITED_ITEMS,
-
   // Sent when the CaptivePortalService checks if we're behind a captive portal.
   // The Source is the Profile the CaptivePortalService belongs to, and the
   // Details are a Details<CaptivePortalService::CheckResults>.
   NOTIFICATION_CAPTIVE_PORTAL_CHECK_RESULT,
 
   // Password Store ----------------------------------------------------------
   // This notification is sent whenenever login entries stored in the password
   // store are changed. The detail of this notification is a list of changes
   // represented by a vector of PasswordStoreChange. Each change includes a
   // change type (ADD, UPDATE, or REMOVE) as well as the
@@ skipping 123 matching lines @@
 
   // Note:-
   // Currently only Content and Chrome define and use notifications.
   // Custom notifications not belonging to Content and Chrome should start
   // from here.
   NOTIFICATION_CHROME_END,
 };
 
 }  // namespace chrome
 
-
 #endif  // CHROME_COMMON_CHROME_NOTIFICATION_TYPES_H_