Convert printing IPCs to Mojo

mojo/public/tools/bindings/mojom.gni

Index: mojo/public/tools/bindings/mojom.gni
diff --git a/mojo/public/tools/bindings/mojom.gni b/mojo/public/tools/bindings/mojom.gni
index d9d999a2c6aae0e61f9fcf361655b9ba6ac3e733..4d57e5b79e2926dc07efbbce4173b90652dd325a 100644
--- a/mojo/public/tools/bindings/mojom.gni
+++ b/mojo/public/tools/bindings/mojom.gni
@@ -47,6 +47,11 @@ foreach(configuration, _bindings_configurations) {
       read_file(typemap.mojom, "")
     }
   }
+  if (is_win && defined(configuration.typemaps_win)) {
+    foreach(typemap, configuration.typemaps_win) {
+      read_file(typemap.mojom, "")
+    }
+  }
 }
 
 # Generates targets for building C++, JavaScript and Java bindings from mojom
@@ -296,6 +301,13 @@ template("mojom") {
             }
           }
         }
+        if (is_win && defined(bindings_configuration.typemaps_win)) {
+          foreach(typemap, bindings_configuration.typemaps_win) {
+            if (get_path_info(source, "abspath") == typemap.mojom) {
+              active_typemaps += [ typemap ]
+            }
+          }
+        }
       }
 
       if (!cpp_only) {