Use an experiment value to set the instant_extended.enabled pref default.

chrome/browser/ui/search/search_unittest.cc

Index: chrome/browser/ui/search/search_unittest.cc
diff --git a/chrome/browser/ui/search/search_unittest.cc b/chrome/browser/ui/search/search_unittest.cc
index 8aaad4f4790458789535e0526faa4b424300eba6..c91203eed212a4c8aeeddfb11de4f9909c43633e 100644
--- a/chrome/browser/ui/search/search_unittest.cc
+++ b/chrome/browser/ui/search/search_unittest.cc
@@ -13,39 +13,42 @@ TEST(EmbeddedSearchFieldTrialTest, GetFieldTrialInfo) {
   uint64 group_number = 0;
   const uint64 ZERO = 0;
 
-  GetFieldTrialInfo("", &flags, &group_number);
+  EXPECT_FALSE(GetFieldTrialInfo("", &flags, &group_number));
   EXPECT_EQ(ZERO, group_number);
   EXPECT_EQ(ZERO, flags.size());
 
-  GetFieldTrialInfo("Group77", &flags, &group_number);
+  EXPECT_TRUE(GetFieldTrialInfo("Group77", &flags, &group_number));
   EXPECT_EQ(uint64(77), group_number);
   EXPECT_EQ(ZERO, flags.size());
 
   group_number = 0;
-  GetFieldTrialInfo("Group77.2", &flags, &group_number);
+  EXPECT_FALSE(GetFieldTrialInfo("Group77.2", &flags, &group_number));
   EXPECT_EQ(ZERO, group_number);
   EXPECT_EQ(ZERO, flags.size());
 
-  GetFieldTrialInfo("Invalid77", &flags, &group_number);
+  EXPECT_FALSE(GetFieldTrialInfo("Invalid77", &flags, &group_number));
   EXPECT_EQ(ZERO, group_number);
   EXPECT_EQ(ZERO, flags.size());
 
-  GetFieldTrialInfo("Group77 ", &flags, &group_number);
+  EXPECT_FALSE(GetFieldTrialInfo("Invalid77", &flags, NULL));
+  EXPECT_EQ(ZERO, flags.size());
+
+  EXPECT_TRUE(GetFieldTrialInfo("Group77 ", &flags, &group_number));
   EXPECT_EQ(uint64(77), group_number);
   EXPECT_EQ(ZERO, flags.size());
 
   group_number = 0;
   flags.clear();
   EXPECT_EQ(uint64(9999), GetUInt64ValueForFlagWithDefault("foo", 9999, flags));
-  GetFieldTrialInfo("Group77 foo:6", &flags, &group_number);
+  EXPECT_TRUE(GetFieldTrialInfo("Group77 foo:6", &flags, &group_number));
   EXPECT_EQ(uint64(77), group_number);
   EXPECT_EQ(uint64(1), flags.size());
   EXPECT_EQ(uint64(6), GetUInt64ValueForFlagWithDefault("foo", 9999, flags));
 
   group_number = 0;
   flags.clear();
-  GetFieldTrialInfo(
-      "Group77 bar:1 baz:7 cat:dogs", &flags, &group_number);
+  EXPECT_TRUE(GetFieldTrialInfo(
+      "Group77 bar:1 baz:7 cat:dogs", &flags, &group_number));
   EXPECT_EQ(uint64(77), group_number);
   EXPECT_EQ(uint64(3), flags.size());
   EXPECT_EQ(true, GetBoolValueForFlagWithDefault("bar", false, flags));
@@ -56,8 +59,8 @@ TEST(EmbeddedSearchFieldTrialTest, GetFieldTrialInfo) {
 
   group_number = 0;
   flags.clear();
-  GetFieldTrialInfo(
-      "Group77 bar:1 baz:7 cat:dogs DISABLED", &flags, &group_number);
+  EXPECT_FALSE(GetFieldTrialInfo(
+      "Group77 bar:1 baz:7 cat:dogs DISABLED", &flags, &group_number));
   EXPECT_EQ(ZERO, group_number);
   EXPECT_EQ(ZERO, flags.size());
 }