Fix compilation with Ozone build for chromium browser.

Fix compilation with Ozone build for chromium browser.

Compiling Error:

../../chrome/browser/shell_integration_linux.cc:294:13: error: unused function 'QuoteCommandLineForDesktopFileExec' [-Werror,-Wunused-function]
std::string QuoteCommandLineForDesktopFileExec(
            ^
../../chrome/browser/shell_integration_linux.cc:310:12: error: unused variable 'kDesktopEntry' [-Werror,-Wunused-const-variable]
const char kDesktopEntry[] = "Desktop Entry";
           ^
../../chrome/browser/shell_integration_linux.cc:312:12: error: unused variable 'kXdgOpenShebang' [-Werror,-Wunused-const-variable]
const char kXdgOpenShebang[] = "#!/usr/bin/env xdg-open";
           ^
3 errors generated.

The above mentioned function and variables are only used from GetNoDisplayFromDesktopFile,
only when support for GLIB is enabled.

Committed: https://crrev.com/577803cd5ac9c7e65cb39f4b18688ff841e82500
Cr-Commit-Position: refs/heads/master@{#291748}

[Elliot Glaysher, 2014-08-25 17:47:51]

lgtm

[kalyank, 2014-08-25 19:18:00]

The CQ bit was checked by kalyan.kondapally@intel.com

[commit-bot: I haz the power, 2014-08-25 19:18:49]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/kalyan.kondapally@intel.com/499823002/1

[commit-bot: I haz the power, 2014-08-25 20:13:54]

Committed patchset #1 (1) as ddabac49de70dc97602c1acae1e579db0bfce043

[commit-bot: I haz the power, 2014-09-10 02:37:05]

Patchset 1 (id:??) landed as
https://crrev.com/577803cd5ac9c7e65cb39f4b18688ff841e82500
Cr-Commit-Position: refs/heads/master@{#291748}