Fix compile with chromeos=1.
Fix compile with chromeos=1.

The error (with dynamic linking) is:
  SOLINK(target) out/Debug/obj.target/chrome/libbrowser.so
  out/Debug/obj.target/browser/chrome/browser/geolocation/wifi_data_provider_linux.o: In function `DeviceDataProvider<WifiData>::DefaultFactoryFunction()':
  /home/sadrul/devel/c/src/chrome/browser/geolocation/wifi_data_provider_linux.cc:355: multiple definition of `DeviceDataProvider<WifiData>::DefaultFactoryFunction()'
  out/Debug/obj.target/browser/chrome/browser/geolocation/wifi_data_provider_chromeos.o:/home/sadrul/devel/c/src/chrome/browser/geolocation/wifi_data_provider_chromeos.cc:71: first defined here
  collect2: ld returned 1 exit status
  make: *** [out/Debug/obj.target/chrome/libbrowser.so] Error 1

Patch by: Sadrul Chowdhury <sadrul@chromium.org>

BUG=None
TEST=Build completes with dynamic linking enabled and GYP_DEFINES='chromeos=1'.

Review URL: http://codereview.chromium.org/4019009

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@63889 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser