Uplift of #12649 (squashed) to release

Author: brave-browser-releases

build/commands/lib/util.js

@@ -587,6 +587,9 @@ const util = {
       assert(fs.existsSync(compiler_proxy_binary), 'compiler_proxy not found at ' + config.gomaDir)
       options.env.GOMA_COMPILER_PROXY_BINARY = compiler_proxy_binary
 
+      // Disable HTTP2 proxy. According to EngFlow this has significant performance impact.
+      options.env.GOMACTL_USE_PROXY = 0
+
       // This skips the auth check and make this call instant if compiler_proxy is already running.
       // If compiler_proxy is not running, it will fail to start if no valid credentials are found.
       options.env.GOMACTL_SKIP_AUTH = 1