Omnibox: HistoryQuick Provider Scoring: Boost Bookmarks

Give untyped bookmarked URLs a boost.
(Change the default value of an untyped visit to a bookmark from 1 to 10.  A typed visit still scores 20.)

This has evaluated positively.

BUG=330214,247715

Review URL: https://codereview.chromium.org/307003002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@273778 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/omnibox/omnibox_field_trial.cc

@@ -398,7 +398,7 @@ int OmniboxFieldTrial::HQPBookmarkValue() {
       GetVariationParamValue(kBundledExperimentFieldTrialName,
                              kHQPBookmarkValueRule);
   if (bookmark_value_str.empty())
-    return 1;
+    return 10;
   // This is a best-effort conversion; we trust the hand-crafted parameters
   // downloaded from the server to be perfect.  There's no need for handle
   // errors smartly.

chrome/browser/omnibox/omnibox_field_trial.h

@@ -237,7 +237,7 @@ class OmniboxFieldTrial {
   // Returns the value an untyped visit to a bookmark should receive.
   // Compare this value with the default of 1 for non-bookmarked untyped
   // visits to pages and the default of 20 for typed visits.  Returns
-  // 1 if the bookmark value experiment isn't active.
+  // 10 if the bookmark value experiment isn't active.
   static int HQPBookmarkValue();
 
   // ---------------------------------------------------------