Move code in ui/gl/* from gfx:: to gl::

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 db9fb70081440de705dcebbf442a56816499aeb3..ac459c0138a722d4fe636c368bf80a273295f0ea 100644
--- a/gpu/command_buffer/service/gpu_tracer.cc
+++ b/gpu/command_buffer/service/gpu_tracer.cc
@@ -125,7 +125,7 @@ void TraceOutputter::TraceServiceEnd(GpuTracerSource source,
 }
 
 GPUTrace::GPUTrace(scoped_refptr<Outputter> outputter,
-                   gfx::GPUTimingClient* gpu_timing_client,
+                   gl::GPUTimingClient* gpu_timing_client,
                    const GpuTracerSource source,
                    const std::string& category,
                    const std::string& name,
@@ -190,11 +190,11 @@ GPUTracer::GPUTracer(gles2::GLES2Decoder* decoder)
           TRACE_DISABLED_BY_DEFAULT("gpu.device"))),
       decoder_(decoder) {
   DCHECK(decoder_);
-  gfx::GLContext* context = decoder_->GetGLContext();
+  gl::GLContext* context = decoder_->GetGLContext();
   if (context) {
     gpu_timing_client_ = context->CreateGPUTimingClient();
   } else {
-    gpu_timing_client_ = new gfx::GPUTimingClient();
+    gpu_timing_client_ = new gl::GPUTimingClient();
   }
 
   disjoint_time_ = gpu_timing_client_->GetCurrentCPUTime();