Speculative fix when translating blob data to a file path

Speculative fix when translating blob data to a file path

Accoding to the stack on crbug.com/410602, BlobData can be null.
However, I am not able to reproduce the bug with any test cases.
So this is just a safe speculative fix.

BUG=410602
Committed: https://crrev.com/d484d41c421e86d5d6f3d38b04c7a76accbf65f8
Cr-Commit-Position: refs/heads/master@{#297007}

[qinmin, 2014-09-25 22:01:52]

qinmin@chromium.org changed reviewers:
+ xhwang@chromium.org

[qinmin, 2014-09-25 22:01:52]

PTAL

[xhwang, 2014-09-25 23:11:11]

lgtm % one suggestion

https://codereview.chromium.org/601043003/diff/1/content/browser/media/androi...
File content/browser/media/android/media_resource_getter_impl.cc (right):

https://codereview.chromium.org/601043003/diff/1/content/browser/media/androi...
content/browser/media/android/media_resource_getter_impl.cc:56:
ReturnResultOnUIThread(callback, "");
If this shouldn't happen, add a NOTREACHED so that someone will hit this and we
can understand why it happened?

[qinmin, 2014-09-26 18:48:49]

https://codereview.chromium.org/601043003/diff/1/content/browser/media/androi...
File content/browser/media/android/media_resource_getter_impl.cc (right):

https://codereview.chromium.org/601043003/diff/1/content/browser/media/androi...
content/browser/media/android/media_resource_getter_impl.cc:56:
ReturnResultOnUIThread(callback, "");
On 2014/09/25 23:11:11, xhwang wrote:
> If this shouldn't happen, add a NOTREACHED so that someone will hit this and
we
> can understand why it happened?

Done.

[qinmin, 2014-09-26 18:48:54]

The CQ bit was checked by qinmin@chromium.org

[commit-bot: I haz the power, 2014-09-26 18:49:43]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/601043003/20001

[commit-bot: I haz the power, 2014-09-26 19:40:56]

Committed patchset #2 (id:20001) as d2fba6b4e3e1cb0b66b1732da2ad6eda74acdae5

[commit-bot: I haz the power, 2014-09-26 19:41:29]

Patchset 2 (id:??) landed as
https://crrev.com/d484d41c421e86d5d6f3d38b04c7a76accbf65f8
Cr-Commit-Position: refs/heads/master@{#297007}