[fsp] Rename file_system_name to display_name for consistency.

[fsp] Rename file_system_name to display_name for consistency.

On the JS side, the argument is called displayName, so on C++ side it should
be display_name for consistency.

TBR=nkostylev@chromium.org
TEST=Not related. Refactoring only.
BUG=248427
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=281717

[mtomasz, 2014-07-08 05:22:45]

@hirono: PTAL. Thanks.

[hirono, 2014-07-08 05:31:34]

lgtm!

[mtomasz, 2014-07-08 05:31:52]

Thanks!

[mtomasz, 2014-07-08 05:31:54]

The CQ bit was checked by mtomasz@chromium.org

[commit-bot: I haz the power, 2014-07-08 05:33:20]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/mtomasz@chromium.org/375793003/1

[commit-bot: I haz the power, 2014-07-08 07:11:32]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)
  linux_chromium_chromeos_clang_dbg on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_chrome...)
  linux_chromium_chromeos_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_chrome...)

[commit-bot: I haz the power, 2014-07-08 07:23:08]

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

[commit-bot: I haz the power, 2014-07-08 07:23:09]

Try jobs failed on following builders:
  linux_chromium_chromeos_clang_dbg on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_chrome...)
  linux_chromium_chromeos_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_chrome...)

[mtomasz, 2014-07-08 08:56:55]

The CQ bit was checked by mtomasz@chromium.org

[commit-bot: I haz the power, 2014-07-08 08:58:12]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/mtomasz@chromium.org/375793003/20001

[mtomasz, 2014-07-08 09:50:29]

@nkostylev: PTAL at provided_file_systems_ui.cc. Thanks.

[commit-bot: I haz the power, 2014-07-08 11:05:28]

Change committed as 281717