content: add header files of public that were not listed in the BUILD.gn file

content/public/common/BUILD.gn

Index: content/public/common/BUILD.gn
diff --git a/content/public/common/BUILD.gn b/content/public/common/BUILD.gn
index 16edb0c560fe7bdb10f242cefff6247b097d4ed0..1539dfaf1c93fb7c27edd5b48527f7bcbd1281ce 100644
--- a/content/public/common/BUILD.gn
+++ b/content/public/common/BUILD.gn
@@ -153,6 +153,7 @@ source_set("common_sources") {
     "frame_navigate_params.h",
     "injection_test_mac.h",
     "injection_test_win.h",
+    "isolated_world_ids.h",
     "javascript_dialog_type.h",
     "main_function_params.h",
     "manifest.cc",
@@ -174,6 +175,7 @@ source_set("common_sources") {
     "origin_trial_policy.cc",
     "origin_trial_policy.h",
     "origin_util.h",
+    "page_importance_signals.h",
     "page_state.cc",
     "page_state.h",
     "page_type.h",
@@ -189,6 +191,7 @@ source_set("common_sources") {
     "presentation_info.h",
     "previews_state.h",
     "process_type.h",
+    "push_event_payload.h",
     "push_messaging_status.cc",
     "push_messaging_status.h",
     "push_subscription_options.h",
@@ -224,6 +227,7 @@ source_set("common_sources") {
     "service_manager_connection.h",
     "simple_connection_filter.cc",
     "simple_connection_filter.h",
+    "socket_permission_request.h",
     "speech_recognition_error.h",
     "speech_recognition_grammar.h",
     "speech_recognition_result.cc",