DEPS: use our mirror for Nima-Cpp

Change-Id: I6d4b688407a6b60e2d672d97bc91816f7212e1bf
Reviewed-on: https://skia-review.googlesource.com/c/186871
Reviewed-by: Hal Canary <halcanary@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
diff --git a/DEPS b/DEPS
index 6388752..b84b7f5 100644
--- a/DEPS
+++ b/DEPS
@@ -33,8 +33,8 @@
   #"third_party/externals/v8"              : "https://chromium.googlesource.com/v8/v8.git@5f1ae66d5634e43563b2d25ea652dfb94c31a3b4",
   "third_party/externals/wuffs"           : "https://github.com/google/wuffs.git@fda3c4c9863d9f9fcec58ae66508c4621fc71ea5",
   "third_party/externals/zlib"            : "https://chromium.googlesource.com/chromium/src/third_party/zlib@47af7c547f8551bd25424e56354a2ae1e9062859",
-  "third_party/externals/Nima-Cpp"      : "https://github.com/2d-inc/Nima-Cpp.git@4bd02269d7d1d2e650950411325eafa15defb084",
-  "third_party/externals/Nima-Math-Cpp" : "https://github.com/2d-inc/Nima-Math-Cpp.git@e0c12772093fa8860f55358274515b86885f0108",
+  "third_party/externals/Nima-Cpp"        : "https://skia.googlesource.com/external/github.com/2d-inc/Nima-Cpp.git@4bd02269d7d1d2e650950411325eafa15defb084",
+  "third_party/externals/Nima-Math-Cpp"   : "https://skia.googlesource.com/external/github.com/2d-inc/Nima-Math-Cpp.git@e0c12772093fa8860f55358274515b86885f0108",
 
   "../src": {
     "url": "https://chromium.googlesource.com/chromium/src.git@7fafb7b52e77b89a69c1ea80e3593b63512cb2a1",