Add more components to the GN build.

components/infobars/test/BUILD.gn

Index: components/infobars/test/BUILD.gn
diff --git a/components/history/core/common/BUILD.gn b/components/infobars/test/BUILD.gn
similarity index 73%
copy from components/history/core/common/BUILD.gn
copy to components/infobars/test/BUILD.gn
index 7a493141978ebc86786ede32720f563e8a537d74..606cecd8fbb778ef85a9423d5377e417466157a3 100644
--- a/components/history/core/common/BUILD.gn
+++ b/components/infobars/test/BUILD.gn
@@ -2,13 +2,13 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-static_library("common") {
+static_library("test_support") {
   sources = [
-    "thumbnail_score.cc",
-    "thumbnail_score.h",
+    "infobar_test.cc",
   ]
 
   deps = [
     "//base",
+    "//skia",
   ]
 }