Added a compile flag so that writing to the debug log file can be turned off.

src/common/debug.cpp

@@ -21,6 +21,7 @@ namespace gl
 {
 void trace(const char *format, ...)
 {
+#if !defined(ANGLE_DISABLE_TRACE) 
     if (trace_on)
     {
         if (format)
@@ -38,5 +39,6 @@ void trace(const char *format, ...)
             }
         }
     }
+#endif // !defined(ANGLE_DISABLE_TRACE)
 }
 }

src/common/debug.h

@@ -19,7 +19,7 @@ namespace gl
 }
 
 // A macro to output a trace of a function call and its arguments to the debugging log
-#ifndef NDEBUG
+#if !defined(NDEBUG) && !defined(ANGLE_DISABLE_TRACE) 
     #define TRACE(message, ...) gl::trace("trace: %s"message"\n", __FUNCTION__, __VA_ARGS__)
 #else
     #define TRACE(...) ((void)0)