Mojo: Simplify typemap usage.

gpu/ipc/common/BUILD.gn

Index: gpu/ipc/common/BUILD.gn
diff --git a/gpu/ipc/common/BUILD.gn b/gpu/ipc/common/BUILD.gn
index 2c31f72c8d331f82aa80577e4e016610f7ad7e67..cb7b9270a80bb67c0cf0dd3cb29ec664e7c32e0e 100644
--- a/gpu/ipc/common/BUILD.gn
+++ b/gpu/ipc/common/BUILD.gn
@@ -46,11 +46,14 @@ source_set("command_buffer_traits_sources") {
     "//third_party/khronos:khronos_headers",
   ]
 
-  deps = [
-    "//base",
+  public_deps = [
     "//gpu/command_buffer/common:common_sources",
     "//ipc",
   ]
+
+  deps = [
+    "//base",
+  ]
 }
 
 source_set("ipc_common_sources") {
@@ -80,8 +83,11 @@ source_set("ipc_common_sources") {
     "//third_party/khronos:khronos_headers",
   ]
 
-  deps = [
+  public_deps = [
     ":command_buffer_traits_sources",
+  ]
+
+  deps = [
     "//base",
     "//gpu/command_buffer/common:common_sources",
     "//gpu/config:config_sources",