[Fetch API] Call endRead sooner to avoid recursive invocation

[Fetch API] Call endRead sooner to avoid recursive invocation

Currently FetchDataConsumerHandle::Reader::endRead is called after
ReadableStreamController::enqueue that can trigger a pull operation.

This CL removes such a recursion by calling endRead before enqueue.

BUG=644117
Review-Url: https://codereview.chromium.org/2311063003
Cr-Commit-Position: refs/heads/master@{#416723}
(cherry picked from commit 561ffb5dd08c8f4af6d33f1caf0ce66ba38f397d)

Committed: https://chromium.googlesource.com/chromium/src/+/a356d611880d6825ed8961523fc2c8c54bcc3a30

[yhirano, 2016-09-08 04:04:03]

Description was changed from

==========
[Fetch API] Call endRead sooner to avoid recursive invocation

Currently FetchDataConsumerHandle::Reader::endRead is called after
ReadableStreamController::enqueue that can trigger a pull operation.

This CL removes such a recursion by calling endRead before enqueue.

BUG=644117

Review-Url: https://codereview.chromium.org/2311063003
Cr-Commit-Position: refs/heads/master@{#416723}
(cherry picked from commit 561ffb5dd08c8f4af6d33f1caf0ce66ba38f397d)
==========

to

==========
[Fetch API] Call endRead sooner to avoid recursive invocation

Currently FetchDataConsumerHandle::Reader::endRead is called after
ReadableStreamController::enqueue that can trigger a pull operation.

This CL removes such a recursion by calling endRead before enqueue.

BUG=644117

Review-Url: https://codereview.chromium.org/2311063003
Cr-Commit-Position: refs/heads/master@{#416723}
(cherry picked from commit 561ffb5dd08c8f4af6d33f1caf0ce66ba38f397d)

Committed:
https://chromium.googlesource.com/chromium/src/+/a356d611880d6825ed8961523fc2...
==========

[yhirano, 2016-09-08 04:04:06]

Committed patchset #1 (id:1) manually as
a356d611880d6825ed8961523fc2c8c54bcc3a30.