Use process per site instance for "Instant".

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 57 matching lines @@
 // Returns search terms if this WebContents is a search results page. It looks
 // in the visible NavigationEntry first, to see if search terms have already
 // been extracted. Failing that, it tries to extract search terms from the URL.
 // Returns a blank string if search terms were not found, or if search terms
 // extraction is disabled for this WebContents or profile.
 string16 GetSearchTerms(const content::WebContents* contents);
 
 // Returns true if |url| should be rendered in the Instant renderer process.
 bool ShouldAssignURLToInstantRenderer(const GURL& url, Profile* profile);
 
+// Returns true if the Instant |url| should use process per site.
+bool ShouldUseProcessPerSiteForInstantURL(const GURL& url, Profile* profile);
+
 // Returns true if the visible entry of |contents| is a New Tab Page rendered
 // by Instant. A page that matches the search or Instant URL of the default
 // search provider but does not have any search terms is considered an Instant
 // New Tab Page.
 bool IsInstantNTP(const content::WebContents* contents);
 
 // Same as IsInstantNTP but uses |nav_entry| to determine the URL for the page
 // instead of using the visible entry.
 bool NavEntryIsInstantNTP(const content::WebContents* contents,
                           const content::NavigationEntry* nav_entry);
@@ skipping 100 matching lines @@
                                     bool default_value,
                                     const FieldTrialFlags& flags);
 
 // Let tests reset the gate that prevents metrics from being sent more than
 // once.
 void ResetInstantExtendedOptInStateGateForTest();
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_SEARCH_SEARCH_H_