Send all field trials from the browser.

base/metrics/field_trial_unittest.cc

Index: base/metrics/field_trial_unittest.cc
diff --git a/base/metrics/field_trial_unittest.cc b/base/metrics/field_trial_unittest.cc
index 50d2e6edfd7083ff51b1aca9d0f9b75ae37435e4..213695d3c7199fc6e09a92d17450357b87d54559 100644
--- a/base/metrics/field_trial_unittest.cc
+++ b/base/metrics/field_trial_unittest.cc
@@ -310,6 +310,36 @@ TEST_F(FieldTrialTest, ActiveGroups) {
   }
 }
 
+TEST_F(FieldTrialTest, AllGroups) {
+  FieldTrial::AllGroup all_group;
+  std::string one_winner("One Winner");
+  scoped_refptr<FieldTrial> trial =
+      CreateFieldTrial(one_winner, 10, "Default", NULL);
+  std::string winner("Winner");
+  trial->AppendGroup(winner, 10);
+  EXPECT_TRUE(trial->GetAllGroup(&all_group));
+  EXPECT_EQ(one_winner, all_group.trial_name);
+  EXPECT_EQ(winner, all_group.group_name);
+  trial->group();
+  EXPECT_TRUE(trial->GetAllGroup(&all_group));
+  EXPECT_EQ(one_winner, all_group.trial_name);
+  EXPECT_EQ(winner, all_group.group_name);
+
+  std::string multi_group("MultiGroup");
+  scoped_refptr<FieldTrial> multi_group_trial =
+      CreateFieldTrial(multi_group, 9, "Default", NULL);
+
+  multi_group_trial->AppendGroup("Me", 3);
+  multi_group_trial->AppendGroup("You", 3);
+  multi_group_trial->AppendGroup("Them", 3);
+  EXPECT_TRUE(multi_group_trial->GetAllGroup(&all_group));
+  // Finalize the group selection by accessing the selected group.
+  multi_group_trial->group();
+  EXPECT_TRUE(multi_group_trial->GetAllGroup(&all_group));
+  EXPECT_EQ(multi_group, all_group.trial_name);
+  EXPECT_EQ(multi_group_trial->group_name(), all_group.group_name);
+}
+
 TEST_F(FieldTrialTest, ActiveGroupsNotFinalized) {
   const char kTrialName[] = "TestTrial";
   const char kSecondaryGroupName[] = "SecondaryGroup";