Decompose //extensions/browser/BUILD.gn

extensions/browser/guest_view/app_view/BUILD.gn

Index: extensions/browser/guest_view/app_view/BUILD.gn
diff --git a/components/subresource_filter/content/common/BUILD.gn b/extensions/browser/guest_view/app_view/BUILD.gn
similarity index 50%
copy from components/subresource_filter/content/common/BUILD.gn
copy to extensions/browser/guest_view/app_view/BUILD.gn
index a6aee28496abfbba30960208c28e0023af97a566..66416e3785144f720f3bc336e1f22d5877904252 100644
--- a/components/subresource_filter/content/common/BUILD.gn
+++ b/extensions/browser/guest_view/app_view/BUILD.gn
@@ -2,15 +2,18 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-static_library("common") {
+source_set("app_view") {
   sources = [
-    "subresource_filter_message_generator.cc",
-    "subresource_filter_message_generator.h",
-    "subresource_filter_messages.h",
+    "app_view_constants.cc",
+    "app_view_constants.h",
+    "app_view_guest.cc",
+    "app_view_guest.h",
+    "app_view_guest_delegate.cc",
+    "app_view_guest_delegate.h",
   ]
+
   deps = [
-    "//components/subresource_filter/core/common",
     "//content/public/common",
-    "//ipc",
+    "//skia",
   ]
 }