Remove DynamicSocketDataProvider

DynamicSocketDataProvider only has one consumer, FtpSocketDataProvider. This CL moves the functionality of DynamicSocketDataProvider directly into FtpSocketDataProvider.

Committed: https://crrev.com/faa1928d9a39bffd16f5fe48c308accbb3a26b01
Cr-Commit-Position: refs/heads/master@{#330317}

[Ryan Hamilton, 2015-05-17 19:18:28]

Patchset #2 (id:20001) has been deleted

[Ryan Hamilton, 2015-05-17 19:54:26]

rch@chromium.org changed reviewers:
+ rtenneti@chromium.org

[Ryan Hamilton, 2015-05-17 19:54:27]

Patch set 1 simply moves DynamicSocketDataProvider to
ftp_network_transaction_unittest.cc. Patch set 2 inlines the functionality into
FtpDataProvider directly.

[ramant (doing other things), 2015-05-17 22:50:09]

lgtm

[Ryan Hamilton, 2015-05-17 23:15:25]

The CQ bit was checked by rch@chromium.org

[Ryan Hamilton, 2015-05-17 23:15:26]

The patchset sent to the CQ was uploaded after l-g-t-m from
rtenneti@chromium.org
Link to the patchset: https://codereview.chromium.org/1137183005/#ps60001
(title: "Rebase")

[commit-bot: I haz the power, 2015-05-17 23:15:29]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1137183005/60001

[commit-bot: I haz the power, 2015-05-18 00:17:10]

Committed patchset #3 (id:60001)

[commit-bot: I haz the power, 2015-05-18 11:33:11]

Patchset 3 (id:??) landed as
https://crrev.com/faa1928d9a39bffd16f5fe48c308accbb3a26b01
Cr-Commit-Position: refs/heads/master@{#330317}