Remove PrerenderLocalPredictor, part 1.

chrome/browser/prerender/prerender_util.cc

 // Copyright (c) 2011 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/prerender/prerender_util.h"
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/sparse_histogram.h"
 #include "base/strings/string_util.h"
@@ skipping 27 matching lines @@
 };
 
 void ReportPrerenderSchemeCancelReason(PrerenderSchemeCancelReason reason) {
   UMA_HISTOGRAM_ENUMERATION(
       "Prerender.SchemeCancelReason", reason,
       PRERENDER_SCHEME_CANCEL_REASON_MAX);
 }
 
 }  // namespace
 
-const char kChromeNavigateExtraDataKey[] = "chrome_navigate";
-
 bool MaybeGetQueryStringBasedAliasURL(
     const GURL& url, GURL* alias_url) {
   DCHECK(alias_url);
   url::Parsed parsed;
   url::ParseStandardURL(url.spec().c_str(), url.spec().length(), &parsed);
   url::Component query = parsed.query;
   url::Component key, value;
   while (url::ExtractQueryKeyValue(url.spec().c_str(), &query, &key, &value)) {
     if (key.len != 3 || strncmp(url.spec().c_str() + key.begin, "url", key.len))
       continue;
@@ skipping 81 matching lines @@
     ReportPrerenderSchemeCancelReason(
         PRERENDER_SCHEME_CANCEL_REASON_CHROME_EXTENSION);
   } else if (url.SchemeIs("about")) {
     ReportPrerenderSchemeCancelReason(PRERENDER_SCHEME_CANCEL_REASON_ABOUT);
   } else {
     ReportPrerenderSchemeCancelReason(PRERENDER_SCHEME_CANCEL_REASON_UNKNOWN);
   }
 }
 
 }  // namespace prerender