Re-enable PDFExtensionTest.BasicPlugin

Re-enable PDFExtensionTest.BasicPlugin

This test was disabled because it was failing. A few changes have been made:
-The page zoom cannot be assumed to be 100% on load as it will depend on the screen size being tested on. So testPageSize now doesn't make that assumption.
-testAccessibilityWithPage was flaking because accessibility information was not always returned for the two text boxes. I spent a bit of time investigating, but couldn't work it out so I've left it partially disabled for now and filed crbug.com/378091.
-The files have all been moved to a more appropriate location (in particular the test was moved out of the data directory).

BUG=303491
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=278340

[jam, 2014-05-28 17:45:36]

lgtm with comment: the C++ browser test file is not in chrome/test/data, so the
move of pdf_extension_test.cc is good. however the javascript test files are
what goes in chrome/test/dat, so I would not move them and leave them where they
are. and since if you leave them you will have a pdf directory, keep test.pdf
file in the same location

[raymes, 2014-05-30 08:24:38]

The CQ bit was checked by raymes@chromium.org

[commit-bot: I haz the power, 2014-05-30 08:26:28]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/raymes@chromium.org/290803007/60001

[commit-bot: I haz the power, 2014-05-30 13:18:44]

Change committed as 273819

[raymes, 2014-06-02 04:18:10]

The CQ bit was checked by raymes@chromium.org

[commit-bot: I haz the power, 2014-06-02 04:18:29]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/raymes@chromium.org/290803007/80001

[commit-bot: I haz the power, 2014-06-02 08:15:53]

Change committed as 274186

[raymes, 2014-06-04 04:25:31]

for test only

[raymes, 2014-06-04 05:58:56]

for test only

[raymes, 2014-06-05 01:51:41]

for test only

[raymes, 2014-06-05 07:11:57]

for test only

[raymes, 2014-06-06 05:01:29]

for test only

[raymes, 2014-06-10 04:14:40]

for test only

[raymes, 2014-06-11 00:31:05]

for test only

[raymes, 2014-06-13 01:22:20]

for test only

[raymes, 2014-06-13 01:35:13]

for test only

[raymes, 2014-06-18 08:18:16]

The CQ bit was checked by raymes@chromium.org

[commit-bot: I haz the power, 2014-06-18 08:19:53]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/raymes@chromium.org/290803007/320001

[commit-bot: I haz the power, 2014-06-18 12:58:27]

Change committed as 278043

[raymes, 2014-06-19 01:44:06]

The CQ bit was checked by raymes@chromium.org

[commit-bot: I haz the power, 2014-06-19 01:45:26]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/raymes@chromium.org/290803007/340001

[commit-bot: I haz the power, 2014-06-19 12:08:13]

Change committed as 278340