Fix log build error for Chromium builds.
Fix log build error for Chromium builds.

This only happens when building in Chromium. Can't roll due to this.

../../third_party/webrtc/modules/desktop_capture/mouse_cursor_monitor_x11.cc: In function 'Window {anonymous}::GetTopLevelWindow(Display*, Window)':
../../third_party/webrtc/modules/desktop_capture/mouse_cursor_monitor_x11.cc:39:7: error: 'LS_INFO' was not declared in this scope
../../third_party/webrtc/modules/desktop_capture/mouse_cursor_monitor_x11.cc:39:7: note: suggested alternative:
../../third_party/webrtc/system_wrappers/interface/logging.h:71:29: note:   'webrtc::LS_INFO'

See for example http://build.chromium.org/p/chromium.webrtc.fyi/builders/Linux%20%5Blatest%20WebRTC%2Blibjingle%5D/builds/3039/steps/compile/logs/stdio

R=henrika@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/3619004

git-svn-id: 03ae4fbe531b1eefc9d815f31e49022782c42458@5100 4adac7df-926f-26a2-2b94-8c16560cd09d

AOSPU/external_chromium_org_third_party_webrtc,CyanogenMod/android_external_chromium_org_third_party_webrtc,bpsinc-native/src_third_party_webrtc,sippet/webrtc,PersonifyInc/chromium_webrtc,svn2github/webrtc-Revision-8758,bpsinc-native/src_third_party_webrtc,Omegaphora/external_chromium_org_third_party_webrtc,krieger-od/webrtc,CyanogenMod/android_external_chromium_org_third_party_webrtc,bpsinc-native/src_third_party_webrtc,xin3liang/platform_external_chromium_org_third_party_webrtc,Alkalyne/webrtctrunk,geekboxzone/lollipop_external_chromium_org_third_party_webrtc,Alkalyne/webrtctrunk,krieger-od/webrtc,MIPS/external-chromium_org-third_party-webrtc,aleonliao/webrtc-trunk,aleonliao/webrtc-trunk,aleonliao/webrtc-trunk,aleonliao/webrtc-trunk,krieger-od/nwjs_chromium_webrtc,SlimXperiments/external_chromium_org_third_party_webrtc,geekboxzone/lollipop_external_chromium_org_third_party_webrtc,geekboxzone/lollipop_external_chromium_org_third_party_webrtc,bpsinc-native/src_third_party_webrtc,jgcaaprom/android_external_chromium_org_third_party_webrtc,SlimXperiments/external_chromium_org_third_party_webrtc,geekboxzone/lollipop_external_chromium_org_third_party_webrtc,MIPS/external-chromium_org-third_party-webrtc,svn2github/webrtc-Revision-8758,android-ia/platform_external_chromium_org_third_party_webrtc,geekboxzone/lollipop_external_chromium_org_third_party_webrtc,jgcaaprom/android_external_chromium_org_third_party_webrtc,Omegaphora/external_chromium_org_third_party_webrtc,Omegaphora/external_chromium_org_third_party_webrtc,SlimXperiments/external_chromium_org_third_party_webrtc,CyanogenMod/android_external_chromium_org_third_party_webrtc,SlimXperiments/external_chromium_org_third_party_webrtc,svn2github/webrtc-Revision-8758,PersonifyInc/chromium_webrtc,xin3liang/platform_external_chromium_org_third_party_webrtc,Omegaphora/external_chromium_org_third_party_webrtc,AOSPU/external_chromium_org_third_party_webrtc,jchavanton/webrtc,Omegaphora/external_chromium_org_third_party_webrtc,MIPS/external-chromium_org-third_party-webrtc,Omegaphora/external_chromium_org_third_party_webrtc,xin3liang/platform_external_chromium_org_third_party_webrtc,PersonifyInc/chromium_webrtc,AOSPU/external_chromium_org_third_party_webrtc,android-ia/platform_external_chromium_org_third_party_webrtc,Alkalyne/webrtctrunk,svn2github/webrtc-Revision-8758,sippet/webrtc,jgcaaprom/android_external_chromium_org_third_party_webrtc,AOSPU/external_chromium_org_third_party_webrtc,jchavanton/webrtc,android-ia/platform_external_chromium_org_third_party_webrtc,MIPS/external-chromium_org-third_party-webrtc,krieger-od/webrtc,jgcaaprom/android_external_chromium_org_third_party_webrtc,android-ia/platform_external_chromium_org_third_party_webrtc,jgcaaprom/android_external_chromium_org_third_party_webrtc,MIPS/external-chromium_org-third_party-webrtc,krieger-od/nwjs_chromium_webrtc,MIPS/external-chromium_org-third_party-webrtc,PersonifyInc/chromium_webrtc,AOSPU/external_chromium_org_third_party_webrtc,jgcaaprom/android_external_chromium_org_third_party_webrtc,android-ia/platform_external_chromium_org_third_party_webrtc,xin3liang/platform_external_chromium_org_third_party_webrtc,SlimXperiments/external_chromium_org_third_party_webrtc,AOSPU/external_chromium_org_third_party_webrtc,sippet/webrtc,sippet/webrtc,geekboxzone/lollipop_external_chromium_org_third_party_webrtc,bpsinc-native/src_third_party_webrtc,aleonliao/webrtc-trunk,jgcaaprom/android_external_chromium_org_third_party_webrtc,jchavanton/webrtc,CyanogenMod/android_external_chromium_org_third_party_webrtc,jgcaaprom/android_external_chromium_org_third_party_webrtc,android-ia/platform_external_chromium_org_third_party_webrtc,Omegaphora/external_chromium_org_third_party_webrtc,krieger-od/nwjs_chromium_webrtc,AOSPU/external_chromium_org_third_party_webrtc,Alkalyne/webrtctrunk,CyanogenMod/android_external_chromium_org_third_party_webrtc,Alkalyne/webrtctrunk,xin3liang/platform_external_chromium_org_third_party_webrtc,android-ia/platform_external_chromium_org_third_party_webrtc,bpsinc-native/src_third_party_webrtc,krieger-od/nwjs_chromium_webrtc,jchavanton/webrtc,bpsinc-native/src_third_party_webrtc,Omegaphora/external_chromium_org_third_party_webrtc,krieger-od/nwjs_chromium_webrtc,android-ia/platform_external_chromium_org_third_party_webrtc,Alkalyne/webrtctrunk,MIPS/external-chromium_org-third_party-webrtc,CyanogenMod/android_external_chromium_org_third_party_webrtc,geekboxzone/lollipop_external_chromium_org_third_party_webrtc,jchavanton/webrtc,krieger-od/webrtc,sippet/webrtc,sippet/webrtc,PersonifyInc/chromium_webrtc,geekboxzone/lollipop_external_chromium_org_third_party_webrtc,SlimXperiments/external_chromium_org_third_party_webrtc,jchavanton/webrtc,jchavanton/webrtc,svn2github/webrtc-Revision-8758,CyanogenMod/android_external_chromium_org_third_party_webrtc,SlimXperiments/external_chromium_org_third_party_webrtc,Alkalyne/webrtctrunk,MIPS/external-chromium_org-third_party-webrtc,xin3liang/platform_external_chromium_org_third_party_webrtc,svn2github/webrtc-Revision-8758,krieger-od/webrtc,krieger-od/webrtc,aleonliao/webrtc-trunk,Alkalyne/webrtctrunk,xin3liang/platform_external_chromium_org_third_party_webrtc,krieger-od/nwjs_chromium_webrtc,bpsinc-native/src_third_party_webrtc,PersonifyInc/chromium_webrtc