Componentize sad_tab

components/sad_tab/BUILD.gn

Index: components/sad_tab/BUILD.gn
diff --git a/components/sad_tab/BUILD.gn b/components/sad_tab/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..d74602760adee9e4c070b01c927ff12e388ae678
--- /dev/null
+++ b/components/sad_tab/BUILD.gn
@@ -0,0 +1,36 @@
+# Copyright 2014 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("//build/config/ui.gni")
+
+static_library("sad_tab") {
+  sources = [
+    "sad_tab.cc",
+    "sad_tab.h",
+    "sad_tab_client.h",
+    "sad_tab_helper.cc",
+    "sad_tab_helper.h",
+    "sad_tab_types.h",
+    "url_constants.cc",
+    "url_constants.h",
+  ]
+
+  deps = [
+    "//base",
+    "//components/strings",
+    "//content/public/browser",
+    "//ui/base",
+    "//url",
+  ]
+
+  if (toolkit_views) {
+    sources += [
+      "views/sad_tab_view.cc",
+      "views/sad_tab_view.h",
+    ]
+    deps += [
+      "//ui/views",
+    ]
+  }
+}