Indexed DB: Regression test to ensure Blobs preserve content-type

Indexed DB: Regression test to ensure Blobs preserve content-type

The Blob type was serialized/restored correctly on the Blink side, but
not on the Chromium side, so when reading a Blob as a stream the
type would be unset.

The Chromium-side fix is: https://codereview.chromium.org/511373002

BUG=408120
R=cmumford@chromium.org

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=181074

[jsbell, 2014-08-28 19:19:28]

cmumford@ - please take a look?

[cmumford, 2014-08-28 20:37:47]

lgtm

[jsbell, 2014-08-28 22:53:21]

The CQ bit was checked by jsbell@chromium.org

[commit-bot: I haz the power, 2014-08-28 22:53:34]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jsbell@chromium.org/509213005/1

[commit-bot: I haz the power, 2014-08-29 00:02:57]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  linux_blink_dbg on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/linux_blink_dbg/builds/2...)
  linux_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/linux_blink_rel/builds/2...)
  mac_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/mac_blink_rel/builds/21477)
  win_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/win_blink_rel/builds/24739)

[jsbell, 2014-08-29 00:55:22]

The failures may be due to trying against lkgr...

[commit-bot: I haz the power, 2014-08-29 01:05:58]

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

[commit-bot: I haz the power, 2014-08-29 01:05:59]

Try jobs failed on following builders:
  linux_blink_dbg on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/linux_blink_dbg/builds/2...)

[jsbell, 2014-08-29 03:14:24]

The CQ bit was checked by jsbell@chromium.org

[commit-bot: I haz the power, 2014-08-29 03:14:54]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jsbell@chromium.org/509213005/1

[commit-bot: I haz the power, 2014-08-29 04:22:13]

Committed patchset #1 (id:1) as 181074