remove --enable-experimental-extension-apis from packaged app shortcut args

Packaged apps are now enabled by default (and arguments on launcher shortcuts are unlikely to function when chrome is already running), so this extra argument on shortcuts can be dropped.

BUG=146037
TEST=ensure shortcuts for packaged apps are still created (e.g. on desktop), and can execute successfully

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=155118

[tapted, 2012-09-05 03:52:38]

can't do a try-build for Windows yet.. so that change is as-yet uncompiled, but
./unit_tests --gtest_filter=ShellIntegrationTest.* seems happy

[benwells, 2012-09-05 03:57:50]

https://chromiumcodereview.appspot.com/10915079/diff/1/chrome/browser/shell_i...
File chrome/browser/shell_integration.h (left):

https://chromiumcodereview.appspot.com/10915079/diff/1/chrome/browser/shell_i...
chrome/browser/shell_integration.h:94: bool is_platform_app;
Can we delete this field from ShortcutInfo now?

[tapted, 2012-09-05 04:59:11]

revised patch set, with unused is_platform_app data member removed from
ShellIntegration::ShortcutInfo (needs build test against win and .. the target
that makes use of ui/views/create_application_shortcut_view.cc

[benwells, 2012-09-05 05:06:40]

lgtm

I've put it in for some try runs on various bots. If all looks good you should
add someone from OWNERS and publish again.

[tapted, 2012-09-05 09:54:53]

Hi Scott, are you able to review my (first) chrome CL? It's centered around a
small change in chrome/browser/shell_integration* - files and conversation
suggest you may be a likely owner.

Thanks!
  - Trent.

[sky, 2012-09-05 14:03:24]

LGTM

[commit-bot: I haz the power, 2012-09-05 23:53:33]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/tapted@chromium.org/10915079/2002

[commit-bot: I haz the power, 2012-09-06 04:19:26]

Change committed as 155118