InstantExtended: hook up InstantTab in incognito.

chrome/browser/search/search.h

Index: chrome/browser/search/search.h
diff --git a/chrome/browser/search/search.h b/chrome/browser/search/search.h
index 3069b0e21af8cfb95a082cd12ddca0705c60602d..75f412b95865d025009b0703e5091c7d60c76c83 100644
--- a/chrome/browser/search/search.h
+++ b/chrome/browser/search/search.h
@@ -57,11 +57,11 @@ bool IsInstantExtendedAPIEnabled();
 // Returns the value to pass to the &espv CGI parameter when loading the
 // embedded search page from the user's default search provider. Will be
 // 0 if the Instant Extended API is not enabled, or if the local-only Instant
-// Extended API is enabled, or if in incognito mode.
-uint64 EmbeddedSearchPageVersion(Profile* profile);
+// Extended API is enabled.
+uint64 EmbeddedSearchPageVersion();
 
 // Returns whether query extraction is enabled.
-bool IsQueryExtractionEnabled(Profile* profile);
+bool IsQueryExtractionEnabled();
 
 // Returns whether the local-only version of Instant Extended API is enabled.
 bool IsLocalOnlyInstantExtendedAPIEnabled();