Tighten conditions for when a URL is a search result, and move

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/string_util.h"
 #include "googleurl/src/url_canon.h"
 #include "googleurl/src/url_parse.h"
 #include "googleurl/src/url_util.h"
 
 namespace prerender {
 
 bool MaybeGetQueryStringBasedAliasURL(
     const GURL& url, GURL* alias_url) {
   DCHECK(alias_url);
   url_parse::Parsed parsed;
@@ skipping 36 matching lines @@
     if (value.len != 1)
       continue;
     uint8 exp = *(url.spec().c_str() + value.begin) - '0';
     if (exp < 1 || exp > 9)
       continue;
     return exp;
   }
   return kNoExperiment;
 }
 
+bool IsGoogleSearchResultURL(const GURL& url) {
+  if (!StartsWithASCII(url.host(), std::string("www.google."), true))
+    return false;
+  return (url.path().empty() ||
+          StartsWithASCII(url.path(), std::string("/search"), true) ||
+          (url.path() == "/") ||
+          StartsWithASCII(url.path(), std::string("/webhp"), true));
+}
+
 }  // namespace prerender