[DEPS] Update protobuf, add protoc_wrapper

Protobuf update moves from github version to chromium version, which has
GN build rules which can be used in standalone builds.

Change-Id: I9d3bcaa896d0b50a615c3e610dad94442b68acd4
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/161000
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
diff --git a/DEPS b/DEPS
index 8d90389..106aa36 100644
--- a/DEPS
+++ b/DEPS
@@ -275,7 +275,12 @@
 
   # Misc dependencies inherited from Tint
   'third_party/protobuf': {
-    'url': '{chromium_git}/external/github.com/protocolbuffers/protobuf.git@2b673bbb57e34fe1bd4570f726fc86b769a3a3d2',
+    'url': '{chromium_git}/chromium/src/third_party/protobuf@41759e11ec427e29e1a72b9401d2af3f6e02d839',
+    'condition': 'dawn_standalone',
+  },
+
+  'tools/protoc_wrapper': {
+    'url': '{chromium_git}/chromium/src/tools/protoc_wrapper@b5ea227bd88235ab3ccda964d5f3819c4e2d8032',
     'condition': 'dawn_standalone',
   },