[ios Mojo] Added util function to convert WKSecurityOrigin to GURL.

ios/web/public/origin_util_unittest.mm

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "ios/web/public/origin_util.h"
+
+#import <WebKit/WebKit.h>
+
+#include "base/mac/objc_property_releaser.h"
+#include "base/mac/scoped_nsobject.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "url/gurl.h"
+
+// WKSecurityOrigin can not be manually created, hence stub is needed.
+@interface WKSecurityOriginStub : NSObject
+// Methods from WKSecurityOrigin class.
+@property(nonatomic, copy) NSString* protocol;
+@property(nonatomic, copy) NSString* host;
+@property(nonatomic) NSInteger port;
+@end
+
+@implementation WKSecurityOriginStub {
+  base::mac::ObjCPropertyReleaser _propertyReleaser;
+}
+@synthesize protocol = _protocol;
+@synthesize host = _host;
+@synthesize port = _port;
+- (instancetype)init {
+  if (self = [super init]) {
+    _propertyReleaser.Init(self, [WKSecurityOriginStub class]);
+  }
+  return self;
+}
+@end
+
+namespace web {
+
+// Tests calling GURLOriginWithWKSecurityOrigin with nil.
+TEST(OriginUtilTest, GURLOriginWithNilWKSecurityOrigin) {
+  GURL url(GURLOriginWithWKSecurityOrigin(nil));
+
+  EXPECT_FALSE(url.is_valid());
+  EXPECT_TRUE(url.spec().empty());
+}
+
+// Tests calling GURLOriginWithWKSecurityOrigin with valid origin.
+TEST(OriginUtilTest, GURLOriginWithValidWKSecurityOrigin) {
+  base::scoped_nsobject<WKSecurityOriginStub> origin(
+      [[WKSecurityOriginStub alloc] init]);
+  [origin setProtocol:@"http"];
+  [origin setHost:@"chromium.org"];
+  [origin setPort:80];
+
+  GURL url(GURLOriginWithWKSecurityOrigin(
+      static_cast<WKSecurityOrigin*>(origin.get())));
+  EXPECT_EQ("http://chromium.org/", url.spec());
+  EXPECT_TRUE(url.port().empty());
+}
+
+}  // namespace web