Add new test: DownloadTest.TestMultipleDownloadsBubble

Add new test: DownloadTest.TestMultipleDownloadsBubble

This ensures that both infobars and bubbles are tested by creating both
DownloadTest.TestMultipleDownloadsInfobar and DownloadTest.
TestMultipleDownloadsBubble. The correct UI (infobar or bubble) is
forced with a switch.

BUG=438758
Committed: https://crrev.com/ff5eb76821e76cb6c90b940249caf3d748e6fbc0
Cr-Commit-Position: refs/heads/master@{#318987}

Committed: https://crrev.com/3d63f87a54b716903100441cbcedbcbabbb33060
Cr-Commit-Position: refs/heads/master@{#319164}

[felt, 2015-03-03 20:51:55]

felt@chromium.org changed reviewers:
+ asanka@chromium.org

[felt, 2015-03-03 20:51:56]

asanka, ptal at updated test.

[asanka, 2015-03-03 22:23:18]

lgtm

[felt, 2015-03-03 23:41:36]

Patchset #2 (id:20001) has been deleted

[felt, 2015-03-03 23:43:10]

The CQ bit was checked by felt@chromium.org

[felt, 2015-03-03 23:43:21]

The CQ bit was unchecked by felt@chromium.org

[felt, 2015-03-04 00:09:34]

On 2015/03/03 22:23:18, asanka wrote:
> lgtm

fyi, added two lines to prevent a memory leak in the new test

[felt, 2015-03-04 00:09:38]

The CQ bit was checked by felt@chromium.org

[felt, 2015-03-04 00:09:38]

The patchset sent to the CQ was uploaded after l-g-t-m from asanka@chromium.org
Link to the patchset: https://codereview.chromium.org/976823002/#ps40001 (title:
"Fix memory leak")

[commit-bot: I haz the power, 2015-03-04 00:10:52]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/976823002/40001

[commit-bot: I haz the power, 2015-03-04 01:09:19]

Committed patchset #2 (id:40001)

[commit-bot: I haz the power, 2015-03-04 01:10:16]

Patchset 2 (id:??) landed as
https://crrev.com/ff5eb76821e76cb6c90b940249caf3d748e6fbc0
Cr-Commit-Position: refs/heads/master@{#318987}

[Finnur, 2015-03-04 08:53:04]

A revert of this CL (patchset #2 id:40001) has been created in
https://codereview.chromium.org/977863002/ by finnur@chromium.org.

The reason for reverting is: New test added is flaky. Sorry. :)
https://build.chromium.org/p/chromium.win/builders/Win%207%20Tests%20x64%20%2...

[ RUN      ] DownloadTest.TestMultipleDownloadsBubble
[3840:2828:0303/224822:WARNING:data_reduction_proxy_config.cc(240)] SPDY proxy
OFF at startup
HTTP server started on http://127.0.0.1:54250...
sending server_data: {"host": "127.0.0.1", "port": 54250} (36 bytes)
c:\b\build\slave\win_x64_builder\build\src\chrome\browser\download\download_browsertest.cc(2974):
error: Value of: mock_bubble_view->IsVisible()
Actual: false
Expected: true.

[felt, 2015-03-04 23:40:46]

The CQ bit was checked by felt@chromium.org

[felt, 2015-03-04 23:40:46]

The patchset sent to the CQ was uploaded after l-g-t-m from asanka@chromium.org
Link to the patchset: https://codereview.chromium.org/976823002/#ps60001 (title:
"Wait until bubble is shown")

[commit-bot: I haz the power, 2015-03-04 23:41:18]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/976823002/60001

[commit-bot: I haz the power, 2015-03-04 23:45:24]

Committed patchset #3 (id:60001)

[commit-bot: I haz the power, 2015-03-04 23:46:14]

Patchset 3 (id:??) landed as
https://crrev.com/3d63f87a54b716903100441cbcedbcbabbb33060
Cr-Commit-Position: refs/heads/master@{#319164}