[Feedback] Move all tests to chrome/javatests

[Feedback] Move all tests to chrome/javatests

This CL moves the tests to a place not dependent on the Chrome shell.

Also, it updates the ConnectivityCheckerTestBase to instead just depend on
NativeLibraryTestBase, since it doesn't need anything else.

The FeedbackCollectorTest needs an activity, and as such it now uses
ChromeActivity and the ChromeActivityTestCaseBase. The profile is
retrieved from the last used one instead of from the current tab.

BUG=386395
Committed: https://crrev.com/95a2fd94e570e83a9d111d34e3c92df2e247281f
Cr-Commit-Position: refs/heads/master@{#337148}

[nyquist, 2015-07-01 18:07:09]

nyquist@chromium.org changed reviewers:
+ newt@chromium.org

[nyquist, 2015-07-01 18:07:10]

newt: PTAL

[newt (away), 2015-07-01 18:13:56]

lgtm

[nyquist, 2015-07-01 23:05:50]

The CQ bit was checked by nyquist@chromium.org

[nyquist, 2015-07-01 23:05:51]

The patchset sent to the CQ was uploaded after l-g-t-m from newt@chromium.org
Link to the patchset: https://codereview.chromium.org/1216403003/#ps40001
(title: "Rebased")

[commit-bot: I haz the power, 2015-07-01 23:06:37]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1216403003/40001

[commit-bot: I haz the power, 2015-07-01 23:38:20]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-07-01 23:38:21]

Try jobs failed on following builders:
  linux_android_rel_ng on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_android_r...)

[nyquist, 2015-07-02 00:03:47]

The CQ bit was checked by nyquist@chromium.org

[nyquist, 2015-07-02 00:03:48]

The patchset sent to the CQ was uploaded after l-g-t-m from newt@chromium.org
Link to the patchset: https://codereview.chromium.org/1216403003/#ps60001
(title: "Add missing @VisibleForTesting annotations")

[commit-bot: I haz the power, 2015-07-02 00:04:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1216403003/60001

[commit-bot: I haz the power, 2015-07-02 00:43:09]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2015-07-02 00:44:26]

Patchset 4 (id:??) landed as
https://crrev.com/95a2fd94e570e83a9d111d34e3c92df2e247281f
Cr-Commit-Position: refs/heads/master@{#337148}