--enable-gpu-service-logging for DirectContextProvider

This plumbs useful debug flag down.

Bug: 908957
Change-Id: I2f1777f850cc9f485698233a615b226c95502ce7
Reviewed-on: https://chromium-review.googlesource.com/c/1492486
Commit-Queue: Jonathan Backer <backer@chromium.org>
Reviewed-by: Peng Huang <penghuang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#636434}

components/viz/service/display_embedder/direct_context_provider.cc

@@ -51,6 +51,9 @@ DirectContextProvider::DirectContextProvider(
                                        command_buffer->service(), &outputter_,
                                        group.get()));
 
+  if (gpu_preferences.enable_gpu_service_logging)
+    decoder->SetLogCommands(true);
+
   command_buffer->set_handler(decoder.get());
 
   gpu::ContextCreationAttribs attribs;
@@ -100,6 +103,10 @@ DirectContextProvider::DirectContextProvider(
 
   base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
       this, "viz::DirectContextProvider", base::ThreadTaskRunnerHandle::Get());
+
+  // TraceEndCHROMIUM is implicit when the context is destroyed
+  gles2_implementation_->TraceBeginCHROMIUM("VizCompositor",
+                                            "DisplayCompositor");
 }
 
 DirectContextProvider::~DirectContextProvider() {

components/viz/service/display_embedder/skia_output_surface_impl_on_gpu.cc

@@ -7,6 +7,7 @@
 #include "base/atomic_sequence_num.h"
 #include "base/bind.h"
 #include "base/callback_helpers.h"
+#include "base/command_line.h"
 #include "base/optional.h"
 #include "base/synchronization/waitable_event.h"
 #include "components/viz/common/frame_sinks/copy_output_request.h"
@@ -22,6 +23,7 @@
 #include "gpu/command_buffer/service/gr_shader_cache.h"
 #include "gpu/command_buffer/service/mailbox_manager.h"
 #include "gpu/command_buffer/service/scheduler.h"
+#include "gpu/command_buffer/service/service_utils.h"
 #include "gpu/command_buffer/service/shared_image_factory.h"
 #include "gpu/command_buffer/service/shared_image_representation.h"
 #include "gpu/command_buffer/service/skia_utils.h"
@@ -535,6 +537,12 @@ SkiaOutputSurfaceImplOnGpu::SkiaOutputSurfaceImplOnGpu(
                         ->GetSurfaceFactoryOzone()
                         ->CreatePlatformWindowSurface(surface_handle);
 #endif
+  if (gpu_service) {
+    gpu_preferences_ = gpu_service->gpu_channel_manager()->gpu_preferences();
+  } else {
+    auto* command_line = base::CommandLine::ForCurrentProcess();
+    gpu_preferences_ = gpu::gles2::ParseGpuPreferences(command_line);
+  }
 
   if (is_using_vulkan())
     InitializeForVulkan(gpu_service);