Fix usage of tracing within Skia, for renderer processes.

skia/ext/event_tracer_impl.cc

Index: skia/ext/event_tracer_impl.cc
diff --git a/skia/ext/event_tracer_impl.cc b/skia/ext/event_tracer_impl.cc
index be92583eb4e44530fd643c8df8f42f900218d260..82d35a61e063d6d6dcf39ef981d6ab4a3518fffc 100644
--- a/skia/ext/event_tracer_impl.cc
+++ b/skia/ext/event_tracer_impl.cc
@@ -73,6 +73,5 @@ void
 void InitSkiaEventTracer() {
   // Initialize the binding to Skia's tracing events. Skia will
   // take ownership of and clean up the memory allocated here.
-  if (!SkEventTracer::GetInstance())
-    SkEventTracer::SetInstance(new skia::SkChromiumEventTracer());
+  SkEventTracer::SetInstance(new skia::SkChromiumEventTracer());
 }