Factor out the shared parts of IPC channel reading.

Factor out the shared parts of IPC channel reading.

This adds a new class+file ChannelReader that is responsible for management
of the common parts of IPC channel reading. The existing platform-specific
ChannelImpl classes derive from this and supply platform-specific reading
features via virtual classes. This is to reduce code duplication between the
Windows and Posix implementations of Channel.


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=125597

[Elliot Glaysher, 2012-03-06 02:55:15]

Removing copypastad code? lgtm

[commit-bot: I haz the power, 2012-03-07 17:35:17]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/brettw@chromium.org/9547009/1

[commit-bot: I haz the power, 2012-03-07 17:51:33]

Try job failure for 9547009-1 (retry) on win_rel for step "compile" (clobber
build).
It's a second try, previously, step "compile" failed.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win_rel&nu...

[commit-bot: I haz the power, 2012-03-08 06:11:37]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/brettw@chromium.org/9547009/12001

[commit-bot: I haz the power, 2012-03-08 12:30:30]

Change committed as 125597