diff --git a/.gitignore b/.gitignore
index 17874aa0..d51efabe 100644
--- a/.gitignore
+++ b/.gitignore
@@ -76,8 +76,8 @@ src/Makefile
 *.pyc
 
 # Ignore directories gclient syncs.
-src/testing
-src/third_party/glog
-src/third_party/lss
-src/third_party/protobuf
-src/tools/gyp
+#src/testing
+#src/third_party/glog
+#src/third_party/lss
+#src/third_party/protobuf
+#src/tools/gyp
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..1edc8a52
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,15 @@
+[submodule "src/third_party/glog"]
+	path = src/third_party/glog
+	url = https://github.com/google/glog.git
+[submodule "src/testing"]
+	path = src/testing
+	url = https://github.com/google/googletest.git
+[submodule "src/third_party/protobuf/protobuf"]
+	path = src/third_party/protobuf/protobuf
+	url = https://github.com/google/protobuf.git
+[submodule "src/tools/gyp"]
+	path = src/tools/gyp
+	url = https://chromium.googlesource.com/external/gyp
+[submodule "src/third_party/lss"]
+	path = src/third_party/lss
+	url = https://chromium.googlesource.com/linux-syscall-support/
diff --git a/src/testing b/src/testing
new file mode 160000
index 00000000..cf517375
--- /dev/null
+++ b/src/testing
@@ -0,0 +1 @@
+Subproject commit cf517375efb5581dc0f187275ebce964c34e4a3f
diff --git a/src/third_party/glog b/src/third_party/glog
new file mode 160000
index 00000000..a6675187
--- /dev/null
+++ b/src/third_party/glog
@@ -0,0 +1 @@
+Subproject commit a66751870fb4e6184ac0a58303cb1f97e499f5fe
diff --git a/src/third_party/lss b/src/third_party/lss
new file mode 160000
index 00000000..08056836
--- /dev/null
+++ b/src/third_party/lss
@@ -0,0 +1 @@
+Subproject commit 08056836f2b4a5747daff75435d10d649bed22f6
diff --git a/src/third_party/protobuf/protobuf b/src/third_party/protobuf/protobuf
new file mode 160000
index 00000000..ffe25c76
--- /dev/null
+++ b/src/third_party/protobuf/protobuf
@@ -0,0 +1 @@
+Subproject commit ffe25c76eac55347d74bef508410f90f01f1db85
diff --git a/src/tools/gyp b/src/tools/gyp
new file mode 160000
index 00000000..0f5bae13
--- /dev/null
+++ b/src/tools/gyp
@@ -0,0 +1 @@
+Subproject commit 0f5bae131e582e4cecc417d13ea0b8de440135c5