Send notification when render process has failed to launch.

Send notification when render process has failed to launch.

Before this patch, information about renderer that crashed
at startup (i.e. failed to start) was not forwarded to WebContents, etc...

BUG=452812
Committed: https://crrev.com/d0f1f7659d4aee2aba2123d2c9a3db66cf8023ff
Cr-Commit-Position: refs/heads/master@{#313461}

[Krzysztof Olczyk, 2015-01-27 14:21:18]

kolczyk@opera.com changed reviewers:
+ avi@chromium.org, ccameron@chromium.org, jam@chromium.org

[Krzysztof Olczyk, 2015-01-27 14:21:18]

Hi avi, ccameron, jam,

could you please take a look at this review?

[jam, 2015-01-27 16:22:30]

lgtm

please don't add 3 reviewers in the future, just pick one.
also do you have a bug for this?

[Krzysztof Olczyk, 2015-01-28 08:09:49]

On 2015/01/27 at 16:22:30, jam wrote:
> lgtm
> 
> please don't add 3 reviewers in the future, just pick one.

Sorry for this. 

> also do you have a bug for this?

Just created one now.

[Krzysztof Olczyk, 2015-01-28 08:09:58]

The CQ bit was checked by kolczyk@opera.com

[commit-bot: I haz the power, 2015-01-28 08:11:01]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/879533006/1

[commit-bot: I haz the power, 2015-01-28 08:23:18]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-28 08:24:08]

Patchset 1 (id:??) landed as
https://crrev.com/d0f1f7659d4aee2aba2123d2c9a3db66cf8023ff
Cr-Commit-Position: refs/heads/master@{#313461}