trace_processor: Migrate ftrace_module to the new base class

Bug: 141459049
Change-Id: Ib30d867edec5c1cc7a730c333739f2511f4980a6
diff --git a/BUILD b/BUILD
index 2b7853b..d6d86a6 100644
--- a/BUILD
+++ b/BUILD
@@ -794,7 +794,9 @@
         "src/trace_processor/heap_profile_tracker.h",
         "src/trace_processor/importers/ftrace/ftrace_descriptors.cc",
         "src/trace_processor/importers/ftrace/ftrace_descriptors.h",
+        "src/trace_processor/importers/ftrace/ftrace_module.cc",
         "src/trace_processor/importers/ftrace/ftrace_module.h",
+        "src/trace_processor/importers/ftrace/ftrace_module_impl.cc",
         "src/trace_processor/importers/ftrace/ftrace_parser.cc",
         "src/trace_processor/importers/ftrace/ftrace_parser.h",
         "src/trace_processor/importers/ftrace/ftrace_tokenizer.cc",