[Process] Increased the timeout in a test to prevent random failures when travis is under a heavy load.
[HttpKernel] Added a missing use statement.

Broken by #8572.
merged branch jakzal/process-stop-with-timeout-test (PR #8652)

This PR was merged into the 2.3 branch.

Discussion
----------

[Process] Increased the timeout in a test to prevent random failures

This test fails quite often when travis is under a heavy load.

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

Commits
-------

9f3b1e1 [Process] Increased the timeout in a test to prevent random failures when travis is under a heavy load.
merged branch jakzal/2.3-fragment-handler-fix (PR #8653)

This PR was merged into the 2.3 branch.

Discussion
----------

[HttpKernel] Added a missing use statement

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

Build was broken by #8572 merged into 2.3 and master.

Commits
-------

ccb497a [HttpKernel] Added a missing use statement.
Merge branch '2.3'

* 2.3:
  [HttpKernel] Added a missing use statement.
  [Process] Increased the timeout in a test to prevent random failures when travis is under a heavy load.