Prepare Chromium and Blink for ICU 59

DEPS

 # This file is used to manage the dependencies of the Chromium src repo. It is
 # used by gclient to determine what version of each dependency to check out, and
 # where.
 #
 # For more information, please refer to the official documentation:
 #   https://sites.google.com/a/chromium.org/dev/developers/how-tos/get-the-code
 #
 # When adding a new dependency, please update the top-level .gitignore file
 # to list the dependency's destination directory.
 #
@@ skipping 18 matching lines @@
 
 vars = {
   'chromium_git': 'https://chromium.googlesource.com',
   'swiftshader_git': 'https://swiftshader.googlesource.com',
   'pdfium_git': 'https://pdfium.googlesource.com',
   'boringssl_git': 'https://boringssl.googlesource.com',
   'skia_git': 'https://skia.googlesource.com',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling sfntly
   # and whatever else without interference from each other.
-  'sfntly_revision': '64f78562d2003eb7cacaaa86a398cbd41881ba6f',
+  'sfntly_revision': '84f71089cb80e6ed31d87f3aa5caab43f1427e85',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and whatever else without interference from each other.
   'skia_revision': '49f33b8c84146dece85801dc1de21dd347310b6b',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.
   'v8_revision': 'c6f0e86a3a00da8e67555aaaaa6364bdb512204b',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling swarming_client
@@ skipping 1099 matching lines @@
 recursedeps = [
   # buildtools provides clang_format, libc++, and libc++abi
   'src/buildtools',
   # android_tools manages the NDK.
   'src/third_party/android_tools',
   # ANGLE manages DEPS that it also owns the build files for, such as dEQP.
   ("src/third_party/angle", "DEPS.chromium"),
   # SwiftShader manages DEPS that it also owns the build files for, such as Subzero.
   ("src/third_party/swiftshader", "DEPS"),
 ]