Allow the omnibox to recognize as URLs inputs that have a host component that ends with a hyphen.

net/base/net_util_unittest.cc

Index: net/base/net_util_unittest.cc
===================================================================
--- net/base/net_util_unittest.cc	(revision 141606)
+++ net/base/net_util_unittest.cc	(working copy)
@@ -774,7 +774,8 @@
     {"a.9a", "", false},
     {"a+9a", "", false},
     {"-a.a9", "", true},
-    {"1-.a-b", "", false},
+    {"1-.a-b", "", true},
+    {"1_.a-b", "", false},
     {"1-2.a_b", "", true},
     {"a.b.c.d.e", "", true},
     {"1.2.3.4.e", "", true},
@@ -786,7 +787,7 @@
   for (size_t i = 0; i < ARRAYSIZE_UNSAFE(compliant_host_cases); ++i) {
     EXPECT_EQ(compliant_host_cases[i].expected_output,
         IsCanonicalizedHostCompliant(compliant_host_cases[i].host,
-                                          compliant_host_cases[i].desired_tld));
+                                     compliant_host_cases[i].desired_tld));
   }
 }