base: Remove using declaration of FundamentalValue as it's no longer necessary.

chrome/browser/policy/policy_map_unittest.cc

Index: chrome/browser/policy/policy_map_unittest.cc
diff --git a/chrome/browser/policy/policy_map_unittest.cc b/chrome/browser/policy/policy_map_unittest.cc
index c540bbbfafacf06d22ab16fdf5c90404a8d65960..eb54400c66c5da051813ae6b118ead03d048134e 100644
--- a/chrome/browser/policy/policy_map_unittest.cc
+++ b/chrome/browser/policy/policy_map_unittest.cc
@@ -51,9 +51,9 @@ TEST(PolicyMapTest, Swap) {
   b.Set(kPolicyHomepageLocation, Value::CreateStringValue("bbb"));
   b.Set(kPolicyHomepageIsNewTabPage, Value::CreateBooleanValue(true));
   a.Swap(&b);
-  StringValue expected("bbb");
+  base::StringValue expected("bbb");
   EXPECT_TRUE(expected.Equals(a.Get(kPolicyHomepageLocation)));
-  FundamentalValue expected_bool(true);
+  base::FundamentalValue expected_bool(true);
   EXPECT_TRUE(expected_bool.Equals(a.Get(kPolicyHomepageIsNewTabPage)));
   StringValue expected_a("aaa");
   EXPECT_TRUE(expected_a.Equals(b.Get(kPolicyHomepageLocation)));