Add disable_brotli_filter and use_platform_icu_alternatives to cronet builder config.

scripts/slave/recipe_modules/chromium_android/chromium_config.py

Index: scripts/slave/recipe_modules/chromium_android/chromium_config.py
diff --git a/scripts/slave/recipe_modules/chromium_android/chromium_config.py b/scripts/slave/recipe_modules/chromium_android/chromium_config.py
index 26dfa2d8dd6b52ed980baa23a2d3cb2aafb59446..88db0bb132ca7d9bc296f39d1676bb1c7fdbe668 100644
--- a/scripts/slave/recipe_modules/chromium_android/chromium_config.py
+++ b/scripts/slave/recipe_modules/chromium_android/chromium_config.py
@@ -69,10 +69,12 @@ def dartium_builder(c):
 
 @CONFIG_CTX()
 def cronet_builder(c):
+  c.gyp_env.GYP_DEFINES['disable_brotli_filter'] = 1
   c.gyp_env.GYP_DEFINES['disable_file_support'] = 1
   c.gyp_env.GYP_DEFINES['disable_ftp_support'] = 1
   c.gyp_env.GYP_DEFINES['enable_bidirectional_stream'] = 1
   c.gyp_env.GYP_DEFINES['enable_websockets'] = 0
+  c.gyp_env.GYP_DEFINES['use_platform_icu_alternatives'] = 1
   c.compile_py.clobber = True
   # TODO(jbudorick): Remove {cronet,net}_unittests_apk targets after
   # gn switch is finished.