Remove invalid link_settings from target condition.

Remove invalid link_settings from target condition.

ICU fails to gyp when run with GYP_DEFINES="android_webview_build=1
use_system_icu=0 use_system_stlport=1" which is a combination of
settings we're trying to bring up temporarily as we migrate away from
system libraries. It fails because it's not permitted to specify
link_settings in a target_condition as the processing is too late.

Remove the invalid link_settings, since we can't do this outside
target_conditions as it's not valid to use -lgabi++ on the host build of
ICU. The link dependency on gabi++ will have to be satisfied manually in
the main libwebviewchromium target instead for this configuration.

BUG=409851
R=mkosiba@chromium.org
TBR=jshin@chromium.org

Committed: 291781

[Torne, 2014-09-02 17:14:38]

torne@chromium.org changed reviewers:
+ jshin@chromium.org

[Torne, 2014-09-02 17:14:39]

Hi Jungshik, can you take a look at this and land it if it's okay? This gyp
conditional hasn't been used in a very long time (maybe ever) so changing it
shouldn't affect anything. I have a local build with the gyp flags mentioned
that works (with other changes in chromium), but getting this done and rolling
it into chromium is the first step.

[Torne, 2014-09-03 10:14:09]

torne@chromium.org changed reviewers:
+ mkosiba@chromium.org

[Torne, 2014-09-03 10:23:51]

torne@chromium.org changed reviewers:
+ benm@chromium.org
- mkosiba@chromium.org

[Torne, 2014-09-03 10:23:52]

Will TBR jshin@ as this is a build fix for a configuration not currently used
and can't have any real effect on chromium.

[Torne, 2014-09-03 10:24:18]

The CQ bit was checked by torne@chromium.org

[commit-bot: I haz the power, 2014-09-03 10:26:26]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-09-03 10:26:27]

Commit queue rejected this change because it did not recognize the base URL.
Please commit your change manually.

[mkosiba (inactive), 2014-09-03 11:10:16]

mkosiba@chromium.org changed reviewers:
+ mkosiba@chromium.org

[mkosiba (inactive), 2014-09-03 11:10:17]

lgtm

[Torne, 2014-09-03 11:10:57]

Committed patchset #1 (id:1) manually as 291781 (presubmit successful).