Create a broker interface for the new Mojo EDK so that the browser can create and duplicate messa...

mojo/edk/system/BUILD.gn

Index: mojo/edk/system/BUILD.gn
diff --git a/mojo/edk/system/BUILD.gn b/mojo/edk/system/BUILD.gn
index 1f04f6582a7d4ce02b16dca32bebf31afb914ec4..0fe314d8df4f8ca757b699135ef2868ed4f82a92 100644
--- a/mojo/edk/system/BUILD.gn
+++ b/mojo/edk/system/BUILD.gn
@@ -31,6 +31,8 @@ static_library("system") {
     "awakable.h",
     "awakable_list.cc",
     "awakable_list.h",
+    "child_token_serializer_win.cc",
+    "child_token_serializer_win.h",
     "configuration.cc",
     "configuration.h",
     "core.cc",
@@ -41,6 +43,8 @@ static_library("system") {
     "data_pipe_consumer_dispatcher.h",
     "data_pipe_producer_dispatcher.cc",
     "data_pipe_producer_dispatcher.h",
+    "default_token_serializer_win.cc",
+    "default_token_serializer_win.h",
     "dispatcher.cc",
     "dispatcher.h",
     "handle_signals_state.h",
@@ -55,6 +59,10 @@ static_library("system") {
     "message_pipe_dispatcher.cc",
     "message_pipe_dispatcher.h",
     "options_validation.h",
+    "parent_token_serializer_state_win.cc",
+    "parent_token_serializer_state_win.h",
+    "parent_token_serializer_win.cc",
+    "parent_token_serializer_win.h",
     "platform_handle_dispatcher.cc",
     "platform_handle_dispatcher.h",
     "raw_channel.cc",
@@ -65,6 +73,8 @@ static_library("system") {
     "shared_buffer_dispatcher.h",
     "simple_dispatcher.cc",
     "simple_dispatcher.h",
+    "token_serializer_messages_win.h",
+    "token_serializer_win.h",
     "transport_data.cc",
     "transport_data.h",
     "waiter.cc",