[BlobAsync] Fixed shared memory mapping

[BlobAsync] Fixed shared memory mapping

The test was designed to catch this case, but because the memory was mapped before we sent it to the class, the incorrect call to Map was a no-op. Test has been fixed.

BUG=619217
Review-Url: https://codereview.chromium.org/2086033002
Cr-Commit-Position: refs/heads/master@{#401053}
(cherry picked from commit 8731540b822e48124e782a976ef5d44632757a29)

Review URL: https://codereview.chromium.org/2094493002 .

Cr-Commit-Position: refs/branch-heads/2743@{#448}
Cr-Branched-From: 2b3ae3b8090361f8af5a611712fc1a5ab2de53cb-refs/heads/master@{#394939}
(cherry picked from commit 1763362b4662d9c8499b5725461da783659cacac)

Committed: https://chromium.googlesource.com/chromium/src/+/3ad99e08f3122f5a5b2512b9acec4e981b3072d6

[dmurph, 2016-07-06 18:42:58]

Description was changed from

==========
[BlobAsync] Fixed shared memory mapping

The test was designed to catch this case, but because the memory was mapped
before we sent it to the class, the incorrect call to Map was a no-op. Test has
been fixed.

BUG=619217

Review-Url: https://codereview.chromium.org/2086033002
Cr-Commit-Position: refs/heads/master@{#401053}
(cherry picked from commit 8731540b822e48124e782a976ef5d44632757a29)

Review URL: https://codereview.chromium.org/2094493002 .

Cr-Commit-Position: refs/branch-heads/2743@{#448}
Cr-Branched-From:
2b3ae3b8090361f8af5a611712fc1a5ab2de53cb-refs/heads/master@{#394939}
(cherry picked from commit 1763362b4662d9c8499b5725461da783659cacac)
==========

to

==========
[BlobAsync] Fixed shared memory mapping

The test was designed to catch this case, but because the memory was mapped
before we sent it to the class, the incorrect call to Map was a no-op. Test has
been fixed.

BUG=619217

Review-Url: https://codereview.chromium.org/2086033002
Cr-Commit-Position: refs/heads/master@{#401053}
(cherry picked from commit 8731540b822e48124e782a976ef5d44632757a29)

Review URL: https://codereview.chromium.org/2094493002 .

Cr-Commit-Position: refs/branch-heads/2743@{#448}
Cr-Branched-From:
2b3ae3b8090361f8af5a611712fc1a5ab2de53cb-refs/heads/master@{#394939}
(cherry picked from commit 1763362b4662d9c8499b5725461da783659cacac)

Committed:
https://chromium.googlesource.com/chromium/src/+/3ad99e08f3122f5a5b2512b9acec...
==========

[dmurph, 2016-07-06 18:43:00]

Committed patchset #1 (id:1) manually as
3ad99e08f3122f5a5b2512b9acec4e981b3072d6.