Nima-Cpp is not available anymore inside googlesource, revert to github one
Simulates `git revert 49233d2521054037ded7d760427c4a0dc1e11356`

diff --git a/DEPS b/DEPS
index 7e0b941..c88b064 100644
--- a/DEPS
+++ b/DEPS
@@ -33,8 +33,8 @@ deps = {
   #"third_party/externals/v8"              : "https://chromium.googlesource.com/v8/v8.git@5f1ae66d5634e43563b2d25ea652dfb94c31a3b4",
   "third_party/externals/wuffs"           : "https://skia.googlesource.com/external/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://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",
+  "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",
 
   "../src": {
     "url": "https://chromium.googlesource.com/chromium/src.git@ccf3465732e5d5363f0e44a8fac54550f62dd1d0",