Move SafeBrowsingUIManager::UnsafeResource to security_interstitials namespace

components/security_interstitials/content/BUILD.gn

Index: components/security_interstitials/content/BUILD.gn
diff --git a/components/security_interstitials/content/BUILD.gn b/components/security_interstitials/content/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..7e5980056f10ab325830927ab54dc7d9ae88847d
--- /dev/null
+++ b/components/security_interstitials/content/BUILD.gn
@@ -0,0 +1,29 @@
+# Copyright 2015 The Chromium Authors. All rights reserved.

[estark, 2016/12/01 00:29:56]

nit: 2016

[Jialiu Lin, 2016/12/01 00:55:10]

Thanks for catching this!

+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+static_library("content") {
+  sources = [
+    "unsafe_resource.cc",
+    "unsafe_resource.h",
+  ]
+
+  deps = [
+    "//base",
+    "//components/safe_browsing_db:hit_report",
+    "//components/safe_browsing_db:util",
+    "//content/public/browser",
+  ]
+
+  if (is_ios) {

[estark, 2016/12/01 00:29:56]

I thiiiiiink this is unnecessary as content/ layers of components shouldn't get
built on iOS.

[Jialiu Lin, 2016/12/01 00:55:10]

You're right. Since content is separated from core, I should remove this "if"
and only add components/security_interstitials/content deps when safe browsing
is enabled (inchrome/browser/BUILD.gn).  

+    sources -= [
+      "unsafe_resource.cc",
+      "unsafe_resource.h",
+    ]
+    deps -= [
+      "//components/safe_browsing_db:hit_report",
+      "//components/safe_browsing_db:util",
+      "//content/public/browser",
+    ]
+  }
+}