Convert some component source sets to static library

components/subresource_filter/core/common/BUILD.gn

Index: components/subresource_filter/core/common/BUILD.gn
diff --git a/components/subresource_filter/core/common/BUILD.gn b/components/subresource_filter/core/common/BUILD.gn
index ac62c3a7996d8f98cb64e77a4053e6113dac1f7d..5c645143dea77876f47ab74ca3825f41ed781945 100644
--- a/components/subresource_filter/core/common/BUILD.gn
+++ b/components/subresource_filter/core/common/BUILD.gn
@@ -2,7 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-source_set("common") {
+static_library("common") {
   sources = [
     "activation_state.cc",
     "activation_state.h",
@@ -35,7 +35,7 @@ source_set("common") {
   ]
 }
 
-source_set("test_support") {
+static_library("test_support") {
   testonly = true
   sources = [
     "test_ruleset_creator.cc",