Moved theme related state from BrowserInstantController to InstantService.

chrome/browser/ui/search/search_tab_helper.cc

 // 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.
 
 #include "chrome/browser/ui/search/search_tab_helper.h"
 
 #include "chrome/browser/search/search.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/navigation_entry.h"
@@ skipping 66 matching lines @@
 
 bool SearchTabHelper::UpdateLastKnownMostVisitedItems(
     const std::vector<InstantMostVisitedItem>& items) {
   if (chrome::AreMostVisitedItemsEqual(items, last_known_most_visited_items_))
     return false;
 
   last_known_most_visited_items_ = items;
   return true;
 }
 
+bool SearchTabHelper::UpdateLastKnownThemeBackgroundInfo(
+    const ThemeBackgroundInfo& theme_info) {
+  if (last_known_theme_info_ == theme_info)
+    return false;
+
+  last_known_theme_info_ = theme_info;
+  return true;
+}
+
 void SearchTabHelper::Observe(
     int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
   DCHECK_EQ(content::NOTIFICATION_NAV_ENTRY_COMMITTED, type);
   UpdateMode();
   last_known_most_visited_items_.clear();
+  last_known_theme_info_ = ThemeBackgroundInfo();
 }
 
 bool SearchTabHelper::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(SearchTabHelper, message)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_SearchBoxShowBars,
                         OnSearchBoxShowBars)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_SearchBoxHideBars,
                         OnSearchBoxHideBars)
     IPC_MESSAGE_UNHANDLED(handled = false)
@@ skipping 33 matching lines @@
   if (web_contents()->IsActiveEntry(page_id))
     model_.SetTopBarsVisible(true);
 }
 
 void SearchTabHelper::OnSearchBoxHideBars(int page_id) {
   if (web_contents()->IsActiveEntry(page_id)) {
     model_.SetTopBarsVisible(false);
     Send(new ChromeViewMsg_SearchBoxBarsHidden(routing_id()));
   }
 }