Remove implicit conversions from scoped_refptr to T* in gpu/

gpu/command_buffer/service/gpu_tracer.cc

Index: gpu/command_buffer/service/gpu_tracer.cc
diff --git a/gpu/command_buffer/service/gpu_tracer.cc b/gpu/command_buffer/service/gpu_tracer.cc
index edd206d19a47537d12592767d163e836cc664cf4..b1c9f23e4858f5a68ac1c1e3b161c956c02d56ee 100644
--- a/gpu/command_buffer/service/gpu_tracer.cc
+++ b/gpu/command_buffer/service/gpu_tracer.cc
@@ -196,7 +196,7 @@ bool GPUTracer::EndDecoding() {
   if (IsTracing()) {
     for (int n = 0; n < NUM_TRACER_SOURCES; n++) {
       for (size_t i = 0; i < markers_[n].size(); i++) {
-        if (markers_[n][i].trace_) {
+        if (markers_[n][i].trace_.get()) {
           markers_[n][i].trace_->End();
           if (markers_[n][i].trace_->IsEnabled())
             traces_.push_back(markers_[n][i].trace_);
@@ -244,7 +244,7 @@ bool GPUTracer::End(GpuTracerSource source) {
   if (!markers_[source].empty()) {
     if (IsTracing()) {
       scoped_refptr<GPUTrace> trace = markers_[source].back().trace_;
-      if (trace) {
+      if (trace.get()) {
         trace->End();
         if (trace->IsEnabled())
           traces_.push_back(trace);