Added repo manifest.
diff --git a/.gitmodules b/.gitmodules
index f09fb70..30ebf6a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -23,7 +23,7 @@
 	path = garnet
 	url = https://fuchsia.googlesource.com/garnet
 [submodule "lib/flutter"]
-	branch = 21b81d902df4ca37bcb4804bf9407267052b0015
+	branch = 51e4e9f9a58fefa196ed174993aeae46e1c17d8c
 	path = lib/flutter
 	url = https://chromium.googlesource.com/external/github.com/flutter/flutter
 [submodule "manifest"]
diff --git a/build b/build
index a147273..b30b354 160000
--- a/build
+++ b/build
@@ -1 +1 @@
-Subproject commit a1472733a61adcacfd08af13983ecd7d62293ac4
+Subproject commit b30b35448a6be052fa7b3ebf8dd8c7ceb3b41372
diff --git a/buildtools b/buildtools
index 2e58113..1e8a2ee 160000
--- a/buildtools
+++ b/buildtools
@@ -1 +1 @@
-Subproject commit 2e58113f3f34aa39bbd0af5dbf68fdcdf26bdc21
+Subproject commit 1e8a2ee6e86e0dd7e3c6061a88a27ac3ff2e1dff
diff --git a/lib/flutter b/lib/flutter
index 21b81d9..51e4e9f 160000
--- a/lib/flutter
+++ b/lib/flutter
@@ -1 +1 @@
-Subproject commit 21b81d902df4ca37bcb4804bf9407267052b0015
+Subproject commit 51e4e9f9a58fefa196ed174993aeae46e1c17d8c
diff --git a/manifest b/manifest
index 94dfc22..df27d66 160000
--- a/manifest
+++ b/manifest
@@ -1 +1 @@
-Subproject commit 94dfc22948ff0ef26155292a39a7f0ec4845dd4f
+Subproject commit df27d6678929a832fde75c67e869403538380f33