Add a URL param to indicate group selection in Instant field trial.

chrome/browser/search_engines/template_url_prepopulate_data_unittest.cc

Index: chrome/browser/search_engines/template_url_prepopulate_data_unittest.cc
diff --git a/chrome/browser/search_engines/template_url_prepopulate_data_unittest.cc b/chrome/browser/search_engines/template_url_prepopulate_data_unittest.cc
index 0348259304be1f4ce4962cb97c5c8f894f57683c..4593afcebd387b84fe676d99b62db9d288bd81d2 100644
--- a/chrome/browser/search_engines/template_url_prepopulate_data_unittest.cc
+++ b/chrome/browser/search_engines/template_url_prepopulate_data_unittest.cc
@@ -132,11 +132,11 @@ TEST_F(TemplateURLPrepopulateDataTest, ProvidersFromPrefs) {
 }
 
 TEST_F(TemplateURLPrepopulateDataTest, SearchEngineFromOrigin) {
-  UIThreadSearchTermsData search_terms_data;
   std::set<GURL> unique_engines;
 
   { // Scoping for the profile.
     TestingProfile profile;
+    UIThreadSearchTermsData search_terms_data(&profile);

[Peter Kasting, 2011/08/10 20:54:06]

You can pass NULL here and below.

     for (size_t i = 0; i < arraysize(kCountryIds); ++i) {
       profile.GetPrefs()->SetInteger(prefs::kCountryIDAtInstall,
                                      kCountryIds[i]);
@@ -157,11 +157,11 @@ TEST_F(TemplateURLPrepopulateDataTest, SearchEngineFromOrigin) {
   }
 
   TestingProfile profile;
+  UIThreadSearchTermsData search_terms_data(&profile);
   for (std::set<GURL>::iterator it = unique_engines.begin();
        it != unique_engines.end(); ++it) {
     scoped_ptr<TemplateURL> found_url(
-        TemplateURLPrepopulateData::GetEngineForOrigin(profile.GetPrefs(),
-                                                       *it));
+        TemplateURLPrepopulateData::GetEngineForOrigin(&profile, *it));
     EXPECT_EQ(
         TemplateURLService::GenerateSearchURLUsingTermsData(
             found_url.get(), search_terms_data).GetOrigin(),
@@ -169,8 +169,7 @@ TEST_F(TemplateURLPrepopulateDataTest, SearchEngineFromOrigin) {
   }
 
   GURL not_a_search_engine("http://example.com/");
-  EXPECT_EQ(NULL, TemplateURLPrepopulateData::GetEngineForOrigin(
-      profile.GetPrefs(),
+  EXPECT_EQ(NULL, TemplateURLPrepopulateData::GetEngineForOrigin(&profile,
       not_a_search_engine));
 }