Unlaunch the HIDDEN mode.

Lots of changes:
1. Unlaunch the HIDDEN mode, by putting it back under the UMA guard. This is
   based on what was decided at Chrome Product Strategy.
2. Eliminate --preload-instant-search, making preloading the default. I think
   preloading has been around long enough and stable enough that we can do so.
3. Restructure the field trial header, removing convenience methods and letting
   clients explicitly refer to the modes. I found having to recall what exactly
   "IsHiddenExperiment()" constituted (HIDDEN? SUGGEST? both?) was a drag.
4. Make SILENT the default, as per Search team's request. So, any time a user
   in one of the other modes doesn't satisfy the requirements (such as having
   UMA or suggest enabled), they'll fall through to SILENT. The only exception
   is if they are in CONTROL.
5. Remove INACTIVE. It's the same as CONTROL anyway.
6. Remove the 'ix' param to stop leaking UMA opt-in state to non-Google sites.
7. Rename "Group" to "Mode" to more accurately reflect the fact that this is
   the current mode of operation, despite whatever group the user fell into.

BUG=none
TEST=none


Review URL: http://codereview.chromium.org/10353017

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@135298 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 1 insertions, 1 deletions

diff --git a/chrome/browser/autocomplete/autocomplete.cc b/chrome/browser/autocomplete/autocomplete.cc
index 5d0e73e..1dd1d90 100644
--- a/chrome/browser/autocomplete/autocomplete.cc
+++ b/chrome/browser/autocomplete/autocomplete.cc
@@ -932,7 +932,7 @@ void AutocompleteController::Start(
       (text.length() < 6)) {
     base::TimeTicks end_time = base::TimeTicks::Now();
     std::string name = "Omnibox.QueryTime." + base::IntToString(text.length()) +
-        InstantFieldTrial::GetGroupName(profile_);
+        InstantFieldTrial::GetModeAsString(profile_);
     base::Histogram* counter = base::Histogram::FactoryGet(
         name, 1, 1000, 50, base::Histogram::kUmaTargetedHistogramFlag);
     counter->Add(static_cast<int>((end_time - start_time).InMilliseconds()));