Revert 244407 "InstantExtended: remove dead code related to the ..."

trunk/src/chrome/browser/search/search.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_BROWSER_SEARCH_SEARCH_H_
 #define CHROME_BROWSER_SEARCH_SEARCH_H_
 
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 136 matching lines @@
 
 // Returns the Local Instant URL of the New Tab Page.
 // TODO(kmadhusu): Remove this function and update the call sites.
 GURL GetLocalInstantURL(Profile* profile);
 
 // Returns true if 'hide_verbatim' flag is enabled in field trials
 // to hide the top match in the native suggestions dropdown if it is a verbatim
 // match.  See comments on ShouldHideTopMatch in autocomplete_result.h.
 bool ShouldHideTopVerbatimMatch();
 
+// Returns true if the cacheable NTP should be shown and false if not.
+// Exposed for testing.
+bool ShouldUseCacheableNTP();
+
+// Returns true if the Instant NTP should be shown and false if not.
+bool ShouldShowInstantNTP();
+
 // Returns when we should show a search button in the omnibox.  This may be any
 // of several values, some of which depend on whether the underlying state of
 // the page would normally be to perform search term replacement; see also
 // ToolbarModel::WouldPerformSearchTermReplacement().
 DisplaySearchButtonConditions GetDisplaySearchButtonConditions();
 
 // Returns true if the origin chip should be shown in the toolbar. This
 // also includes the related changes to the omnibox.
 bool ShouldDisplayOriginChip();
 
@@ skipping 13 matching lines @@
 //
 // Notice the scheme change.
 //
 // If the input is already a privileged URL then that same URL is returned.
 //
 // If |url| is that of the online NTP, its host is replaced with "online-ntp".
 // This forces the NTP and search results pages to have different SiteIntances,
 // and hence different processes.
 GURL GetEffectiveURLForInstant(const GURL& url, Profile* profile);
 
+// Returns the staleness timeout (in seconds) that should be used to refresh the
+// InstantLoader.
+int GetInstantLoaderStalenessTimeoutSec();
+
+// Returns true if |contents| corresponds to a preloaded instant extended NTP.
+bool IsPreloadedInstantExtendedNTP(const content::WebContents* contents);
+
 // Rewrites |url| if
 //   1. |url| is kChromeUINewTabURL,
 //   2. InstantExtended is enabled, and
 //   3. The --instant-new-tab-url switch is set to a valid URL.
 // |url| is rewritten to the value of --instant-new-tab-url.
 bool HandleNewTabURLRewrite(GURL* url,
                             content::BrowserContext* browser_context);
 // Reverses the operation from HandleNewTabURLRewrite.
 bool HandleNewTabURLReverseRewrite(GURL* url,
                                    content::BrowserContext* browser_context);
@@ skipping 48 matching lines @@
 bool GetBoolValueForFlagWithDefault(const std::string& flag,
                                     bool default_value,
                                     const FieldTrialFlags& flags);
 
 // Returns the Cacheable New Tab Page URL for the given |profile|.
 GURL GetNewTabPageURL(Profile* profile);
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_SEARCH_SEARCH_H_