AU: Lower HTTP timeout on official builds.

libcurl_http_fetcher.cc

Index: libcurl_http_fetcher.cc
diff --git a/libcurl_http_fetcher.cc b/libcurl_http_fetcher.cc
index e46bf8e5d7dab99d064be04d3a7d213ee34e761d..af7e8453a32fa7227be60ff928e2b97d25875b50 100644
--- a/libcurl_http_fetcher.cc
+++ b/libcurl_http_fetcher.cc
@@ -116,7 +116,11 @@ void LibcurlHttpFetcher::ResumeTransfer(const std::string& url) {
   // If the connection drops under 10 bytes/sec for 3 minutes, reconnect.
   CHECK_EQ(curl_easy_setopt(curl_handle_, CURLOPT_LOW_SPEED_LIMIT, 10),
            CURLE_OK);
-  CHECK_EQ(curl_easy_setopt(curl_handle_, CURLOPT_LOW_SPEED_TIME, 3 * 60),
+  // Use a smaller timeout on official builds, larger for dev. Dev users
+  // want a longer timeout b/c they may be waiting on the dev server to
+  // build an image.
+  const int kTimeout = IsOfficialBuild() ? 90 : 3 * 60;
+  CHECK_EQ(curl_easy_setopt(curl_handle_, CURLOPT_LOW_SPEED_TIME, kTimeout),
            CURLE_OK);
 
   // By default, libcurl doesn't follow redirections. Allow up to