The Tor Browser: storage/test/unit/test_telemetry

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

     1 /* Any copyright is dedicated to the Public Domain.

     2  * http://creativecommons.org/publicdomain/zero/1.0/

     3  */

     5 // Make sure that there are telemetry entries created by sqlite io

     7 function run_sql(d, sql) {

     8   var stmt = d.createStatement(sql)

     9   stmt.execute()

    10   stmt.finalize();

    11 }

    13 function new_file(name)

    14 {

    15   var file = dirSvc.get("ProfD", Ci.nsIFile);

    16   file.append(name);

    17   return file;

    18 }

    19 function run_test()

    20 {

    21   const Telemetry = Cc["@mozilla.org/base/telemetry;1"].getService(Ci.nsITelemetry);

    22   let read_hgram = Telemetry.getHistogramById("MOZ_SQLITE_OTHER_READ_B");

    23   let old_sum = read_hgram.snapshot().sum;

    24   const file = new_file("telemetry.sqlite");

    25   var d = getDatabase(file);

    26   run_sql(d, "CREATE TABLE bloat(data varchar)");

    27   run_sql(d, "DROP TABLE bloat")

    28   do_check_true(read_hgram.snapshot().sum > old_sum)

    29 }

The Tor Browser / file revision

storage/test/unit/test_telemetry_vfs.js@129ffea94266

storage/test/unit/test_telemetry_vfs.js