Add an identity component for unique/opaque url::Origins.

url/origin_unittest.cc

Index: url/origin_unittest.cc
diff --git a/url/origin_unittest.cc b/url/origin_unittest.cc
index a5c30426f346214213f94c2b46c7da5924e48b89..375f00271b1fb3cd68f0fc2ff4e02a27bc1d8f03 100644
--- a/url/origin_unittest.cc
+++ b/url/origin_unittest.cc
@@ -41,7 +41,7 @@ TEST(OriginTest, UniqueOriginComparison) {
   EXPECT_EQ("", unique_origin.host());
   EXPECT_EQ(0, unique_origin.port());
   EXPECT_TRUE(unique_origin.unique());
-  EXPECT_FALSE(unique_origin.IsSameOriginWith(unique_origin));
+  EXPECT_TRUE(unique_origin.IsSameOriginWith(unique_origin));
 
   const char* const urls[] = {"data:text/html,Hello!",
                               "javascript:alert(1)",
@@ -53,13 +53,15 @@ TEST(OriginTest, UniqueOriginComparison) {
     SCOPED_TRACE(test_url);
     GURL url(test_url);
     url::Origin origin(url);
+    url::Origin origin_copy(origin);
     EXPECT_EQ("", origin.scheme());
     EXPECT_EQ("", origin.host());
     EXPECT_EQ(0, origin.port());
     EXPECT_TRUE(origin.unique());
-    EXPECT_FALSE(origin.IsSameOriginWith(origin));
+    EXPECT_TRUE(origin.IsSameOriginWith(origin));
     EXPECT_FALSE(unique_origin.IsSameOriginWith(origin));
     EXPECT_FALSE(origin.IsSameOriginWith(unique_origin));
+    EXPECT_TRUE(origin.IsSameOriginWith(origin_copy));
 
     ExpectParsedUrlsEqual(GURL(origin.Serialize()), origin.GetURL());
   }
@@ -405,7 +407,7 @@ TEST(OriginTest, UnsafelyCreateUniqueOnInvalidInput) {
     EXPECT_EQ("", origin.host());
     EXPECT_EQ(0, origin.port());
     EXPECT_TRUE(origin.unique());
-    EXPECT_FALSE(origin.IsSameOriginWith(origin));
+    EXPECT_TRUE(origin.IsSameOriginWith(origin));
 
     ExpectParsedUrlsEqual(GURL(origin.Serialize()), origin.GetURL());
   }
@@ -435,7 +437,7 @@ TEST(OriginTest, UnsafelyCreateUniqueViaEmbeddedNulls) {
     EXPECT_EQ("", origin.host());
     EXPECT_EQ(0, origin.port());
     EXPECT_TRUE(origin.unique());
-    EXPECT_FALSE(origin.IsSameOriginWith(origin));
+    EXPECT_TRUE(origin.IsSameOriginWith(origin));
 
     ExpectParsedUrlsEqual(GURL(origin.Serialize()), origin.GetURL());
   }