Bug 1332856. Request a longer timeout (2x) for browser_report_site_issue.js. r=jmaher

This intermittently fails due to a timeout on linux builds only.

MozReview-Commit-ID: 2XWEIhXFAoM

--HG--
extra : rebase_source : 0e1ebd5d62a426c501b665240109a6a7e4c48a52

browser/extensions/webcompat-reporter/test/browser/browser_report_site_issue.js

@@ -1,6 +1,7 @@
 /* Test that clicking on the Report Site Issue button opens a new tab
    and sends a postMessaged blob to it. */
 add_task(function* test_screenshot() {
+  requestLongerTimeout(2);
 
   // ./head.js sets the value for PREF_WC_REPORTER_ENDPOINT
   yield SpecialPowers.pushPrefEnv({set: [[PREF_WC_REPORTER_ENDPOINT, NEW_ISSUE_PAGE]]});