Call scoped_refptr<T>::get() rather than relying on implicit "operator T*"

Call scoped_refptr<T>::get() rather than relying on implicit "operator T*"

This upates calls to bound temporary objects to also use get().
While it has the same semantic equivalence to the existing code, this generally
represents a dangerous pattern - indeed, part of the whole motivation for this
change is to make this anti-pattern very visible to authors.

This change simply updates all of the call sites, to allow the "operator T*"
to be removed and preventing new instances. The existing instances will then be
reviewed for "suspicious" changes and updated to use/pass scoped_refptr<T>
rather than T*, as appropriate.

BUG=110610
TBR=darin

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=205560

[Ryan Sleevi, 2013-06-08 01:34:30]

TBR.

As scary as this may look, it's semantically equivalent to the original code -
and it's for scary reasons like this that I'm trying to remove the operator T*.

[commit-bot: I haz the power, 2013-06-08 01:35:01]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/rsleevi@chromium.org/15984016/1

[commit-bot: I haz the power, 2013-06-08 03:30:56]

Retried try job too often on linux_rel for step(s) browser_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=linux_rel&...

[commit-bot: I haz the power, 2013-06-08 09:10:22]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/rsleevi@chromium.org/15984016/1

[commit-bot: I haz the power, 2013-06-08 09:46:40]

Sorry for I got bad news for ya.
Compile failed with a clobber build on linux_rel.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=linux_rel&...
Your code is likely broken or HEAD is junk. Please ensure your
code is not broken then alert the build sheriffs.
Look at the try server FAQ for more details.

[commit-bot: I haz the power, 2013-06-10 19:12:00]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/rsleevi@chromium.org/15984016/31001

[commit-bot: I haz the power, 2013-06-11 06:30:37]

Retried try job too often on chromium_presubmit for step(s) presubmit
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=chromium_p...

[Ryan Sleevi, 2013-06-11 16:46:52]

Committed patchset #4 manually as r205560 (presubmit successful).

[darin (slow to review), 2013-06-12 00:08:36]

OK, LGTM