OK, not really, but Firefox can be configured to block content in subdocuments.
Since the results of these tests are dependent on the setting you have picked for Flash (in the Plugins tab of about:addons), there is an Expected column below for each setting.
| Test | Expected for "Always Activate" |
Expected for "Ask to Activate" |
Expected for "Never Activate" |
Actual |
|---|---|---|---|---|
| Top-Level |  |
 |
||
| Blocked subdocument in a non-third-party context | |
|
||
| Subdocument Block Exception | |
|