Tell DNS prefetch when search URL is likely so that prewarming can be done...

chrome/browser/autocomplete/autocomplete.cc

Index: chrome/browser/autocomplete/autocomplete.cc
===================================================================
--- chrome/browser/autocomplete/autocomplete.cc	(revision 43988)
+++ chrome/browser/autocomplete/autocomplete.cc	(working copy)
@@ -513,6 +513,31 @@
   }
 }
 
+bool AutocompleteMatch::IsSearchType() const {
+  switch (type) {
+    case URL_WHAT_YOU_TYPED:
+    case HISTORY_URL:
+    case HISTORY_TITLE:
+    case HISTORY_BODY:
+    case HISTORY_KEYWORD:
+    case NAVSUGGEST:
+      return false;
+
+    case SEARCH_WHAT_YOU_TYPED:
+    case SEARCH_HISTORY:
+    case SEARCH_SUGGEST:
+      return true;
+
+    case SEARCH_OTHER_ENGINE:
+    case OPEN_HISTORY_PAGE:
+      return false;
+
+    default:
+      NOTREACHED();
+      return false;
+  }
+}
+
 #ifndef NDEBUG
 void AutocompleteMatch::Validate() const {
   ValidateClassifications(contents, contents_class);
@@ -951,7 +976,7 @@
         match.relevance = -match.relevance;
       latest_result_.AddMatch(match);
       return;
-    } // else, fall through and add item.
+    }  // else, fall through and add item.
   }
 
   AutocompleteMatch match(NULL, 0, false, AutocompleteMatch::OPEN_HISTORY_PAGE);