Fix bug where app name is wrong in all languages except English.

Fix bug where app name is wrong in all languages except English.

The "app_name" string needs to be defined in an Android resources XML file
instead of in android_chrome_strings.grd so the string isn't copied into
every language (which makes it impossible to override the string from a
single strings.xml file)

BUG=441424
Committed: https://crrev.com/9f03ba31407bbb0ccb395a0a1fc452685001f70b
Cr-Commit-Position: refs/heads/master@{#308189}

[newt (away), 2014-12-12 19:05:28]

newt@chromium.org changed reviewers:
+ cjhopman@chromium.org

[newt (away), 2014-12-12 19:05:28]

PTAL

yay resources!

[cjhopman, 2014-12-12 21:57:08]

lgtm

[newt (away), 2014-12-12 22:00:28]

The CQ bit was checked by newt@chromium.org

[commit-bot: I haz the power, 2014-12-12 22:01:51]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/800953002/1

[commit-bot: I haz the power, 2014-12-12 23:09:57]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-12-12 23:10:39]

Patchset 1 (id:??) landed as
https://crrev.com/9f03ba31407bbb0ccb395a0a1fc452685001f70b
Cr-Commit-Position: refs/heads/master@{#308189}