Roll DEPS for ICU to e4194dc7

https://chromium.googlesource.com/chromium/deps/icu/+log/d888fd2a..e4194dc7

TBR=dsinclair@chromium.org

Change-Id: I27a492c585a1c38b50a899317b5b98fe231e15b1
Reviewed-on: https://pdfium-review.googlesource.com/31475
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
diff --git a/DEPS b/DEPS
index 5aed6dd..e6cf619 100644
--- a/DEPS
+++ b/DEPS
@@ -23,7 +23,7 @@
   'depot_tools_revision': '869a2857a4f3acc08fdec6182ecec5b73593be3b',
   'freetype_revision': '2157d8fa6f7e12063ca166476ed2223d24234db7',
   'gtest_revision': '4bd8c4638ada823a8da2569735cc0a9402fb8052',
-  'icu_revision': 'd888fd2a1be890f4d35e43f68d6d79f42519a357',
+  'icu_revision': 'e4194dc7bbb3305d84cbb1b294274ca70d230721',
   'instrumented_lib_revision': '323cf32193caecbf074d1a0cb5b02b905f163e0f',
   'jinja2_revision': 'd34383206fa42d52faa10bb9931d6d538f3a57e0',
   'jpeg_turbo_revision': '7260e4d8b8e1e40b17f03fafdf1cd83296900f76',