Consistently enable brotli in Cronet iOS builds

Bug: 737231
Change-Id: Id6f45920f7dae7e185da6b663f3bc0cfb8073cc3
Reviewed-on: https://chromium-review.googlesource.com/568856
Commit-Queue: Brad Lassey <lassey@chromium.org>
Reviewed-by: Misha Efimov <mef@chromium.org>
Reviewed-by: Sylvain Defresne <sdefresne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#486434}

components/cronet/tools/package_ios.py

@@ -100,7 +100,7 @@ def package_ios_framework_using_gn(out_dir='out/Framework', extra_options=''):
                 'is_cronet_build=true is_component_build=false ' \
                 'disable_file_support=true disable_ftp_support=true ' \
                 'use_platform_icu_alternatives=true ' \
-                'disable_brotli_filter=true enable_dsyms=true ' \
+                'disable_brotli_filter=false enable_dsyms=true ' \
                 'target_cpu="%s" additional_target_cpus = ["%s"] %s' % \
                 (target_cpu, additional_cpu, gn_extra_args)
 
@@ -177,7 +177,7 @@ def main():
 
   gyp_defines = 'GYP_DEFINES="OS=ios enable_websockets=0 '+ \
       'disable_file_support=1 disable_ftp_support=1 '+ \
-      'enable_errorprone=1 disable_brotli_filter=1 chromium_ios_signing=0 ' + \
+      'enable_errorprone=1 disable_brotli_filter=0 chromium_ios_signing=0 ' + \
       'target_subarch=both ' + use_platform_icu_alternatives + '"'
 
   if not options.gn:

ios/build/bots/chromium.fyi/ios-simulator-cronet.json

@@ -6,7 +6,7 @@
   "xcode version": "8.0",
   "gn_args": [
     "additional_target_cpus=[\"x86\"]",
-    "disable_brotli_filter=true",
+    "disable_brotli_filter=false",
     "disable_file_support=true",
     "disable_ftp_support=true",
     "enable_websockets=false",