Fix 'gn check' errors found in nacl_trusted_plugin target.

components/nacl/renderer/plugin/BUILD.gn

Index: components/nacl/renderer/plugin/BUILD.gn
diff --git a/components/nacl/renderer/plugin/BUILD.gn b/components/nacl/renderer/plugin/BUILD.gn
index 5defb10091169bbc5e82e643168deb1cc4c8cbfe..14f75cc17dab4a63c185a8bf1019e649155976b8 100644
--- a/components/nacl/renderer/plugin/BUILD.gn
+++ b/components/nacl/renderer/plugin/BUILD.gn
@@ -20,6 +20,7 @@ source_set("nacl_trusted_plugin") {
   ]
 
   deps = [
+    "//base",
     "//media:shared_memory_support",
     "//native_client/src/shared/gio",
     "//native_client/src/shared/imc",
@@ -29,6 +30,7 @@ source_set("nacl_trusted_plugin") {
     "//native_client/src/trusted/platform_qualify:platform_qual_lib",
     "//native_client/src/trusted/simple_service",
     "//native_client/src/trusted/weak_ref",
+    "//ppapi/c",
     "//ppapi/cpp:objects",
     "//ppapi/cpp/private:internal_module",
   ]