Add third_party/google_tracing_framework submodule.
diff --git a/.gitmodules b/.gitmodules
index 245b5f7..e835212 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -34,3 +34,6 @@
 	path = third_party/gemmlowp
 	url = https://github.com/google/gemmlowp.git
 	shallow = true
+[submodule "third_party/google_tracing_framework"]
+	path = third_party/google_tracing_framework
+	url = https://github.com/google/tracing-framework.git
diff --git a/third_party/google_tracing_framework b/third_party/google_tracing_framework
new file mode 160000
index 0000000..495ced9
--- /dev/null
+++ b/third_party/google_tracing_framework
@@ -0,0 +1 @@
+Subproject commit 495ced98de99a5895e484b2e09771edb42d3c7ab