Replace --ppapi-keep-alive-throttle command line switch with IPC parameter.

Replace --ppapi-keep-alive-throttle command line switch with IPC parameter.

Part of a broad effort to reduce the number of command line switches.

This is the second land of this change - correcting a static initializer issue.

BUG=350510
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=256961

[scheib, 2014-03-12 18:19:38]

Please take a look again -- the previous land included a static initializer,
corrected in this change.

[Mark Seaborn, 2014-03-12 18:25:36]

On 2014/03/12 18:19:38, scheib wrote:
> Please take a look again -- the previous land included a static initializer,
> corrected in this change.

The difference from r351620 LGTM.

[dmichael (off chromium), 2014-03-12 19:15:13]

lgtm

[Tom Sepez, 2014-03-13 18:36:45]

Still LGTM.

[scheib, 2014-03-13 20:02:08]

The CQ bit was checked by scheib@chromium.org

[commit-bot: I haz the power, 2014-03-13 20:09:01]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/scheib@chromium.org/197693003/40001

[commit-bot: I haz the power, 2014-03-14 00:07:56]

Change committed as 256961

[Nico, 2014-03-14 05:00:07]

A revert of this CL has been created in
https://codereview.chromium.org/199933002/ by thakis@chromium.org.

The reason for reverting is: Broke building on
http://build.chromium.org/p/chromium.memory/builders/Chromium%20OS%20%28x86%2...

This bot builds with disable_nacl=1 for some reason (mentioned in the stdio
above somewhere – not sure why this is), and thus chrome_browser doesn't depend
on nacl_browser, leading to this linker error when building browser_tests:

chromeos-chrome-35.0.1889.0_alpha-r1:
../../../../../../../home/chrome-bot/chrome_root/src/chrome/browser/extensions/app_background_page_apitest.cc:134:
error: undefined reference to
'nacl::NaClProcessHost::SetPpapiKeepAliveThrottleForTesting(unsigned int)'


(Maybe this change generally breaks building browser_tests with
disable_nacl=1?).