Bug 958596 - Add support for gfx logging on android and b2g. r=Bas

--HG--
extra : rebase_source : 8d5a1c0dfc4f5f74e8417531b1f9f39c54e85d49

gfx/2d/Logging.h

@@ -10,6 +10,7 @@
 #include <sstream>
 #include <stdio.h>
 
+#include "nsDebug.h"
 #include "Point.h"
 #include "Matrix.h"
 
@@ -57,13 +58,13 @@ static inline void OutputMessage(const std::string &aString, int aLevel) {
   if (aLevel >= sGfxLogLevel) {
     ::OutputDebugStringA(aString.c_str());
   }
-#elif defined(PR_LOGGING)
+#elif defined(PR_LOGGING) && !(defined(MOZ_WIDGET_GONK) || defined(MOZ_WIDGET_ANDROID))
   if (PR_LOG_TEST(GetGFX2DLog(), PRLogLevelForLevel(aLevel))) {
     PR_LogPrint(aString.c_str());
   }
 #else
   if (aLevel >= sGfxLogLevel) {
-    printf("%s", aString.c_str());
+    printf_stderr("%s", aString.c_str());
   }
 #endif
 }