mandoline: Add automatic tracing at mojo call sites.

components/html_viewer/global_state.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/html_viewer/global_state.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/i18n/icu_util.h"
 #include "base/logging.h"
 #include "components/html_viewer/blink_platform_impl.h"
 #include "components/html_viewer/blink_settings_impl.h"
 #include "components/html_viewer/media_factory.h"
 #include "components/scheduler/renderer/renderer_scheduler.h"
 #include "gin/v8_initializer.h"
 #include "mojo/application/public/cpp/application_impl.h"
 #include "mojo/logging/init_logging.h"
+#include "mojo/services/tracing/public/cpp/tracing_impl.h"
 #include "third_party/WebKit/public/web/WebKit.h"
 #include "third_party/WebKit/public/web/WebRuntimeFeatures.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/ui_base_paths.h"
 #include "ui/gfx/display.h"
 #include "ui/mojo/init/ui_init.h"
 #include "v8/include/v8.h"
 
 #if defined(OS_LINUX) && !defined(OS_ANDROID)
 #include "components/font_service/public/cpp/font_loader.h"
@@ skipping 41 matching lines @@
 
 }  // namespace
 
 GlobalState::GlobalState(mojo::ApplicationImpl* app)
     : app_(app),
       resource_loader_(app, GetResourcePaths()),
       did_init_(false),
       device_pixel_ratio_(1.f),
       discardable_memory_allocator_(kDesiredMaxMemory),
       compositor_thread_("compositor thread"),
-      blink_settings_(new BlinkSettingsImpl()) {}
+      blink_settings_(new BlinkSettingsImpl()) {
+  tracing_.Initialize(app);
+}
 
 GlobalState::~GlobalState() {
   if (blink_platform_) {
     renderer_scheduler_->Shutdown();
     blink::shutdown();
   }
 #if defined(OS_LINUX) && !defined(OS_ANDROID)
   if (font_loader_.get()) {
     SkFontConfigInterface::SetGlobal(nullptr);
     // FontLoader is ref counted. We need to explicitly shutdown the background
@@ skipping 90 matching lines @@
   return gpu_info_.get();
 }
 
 void GlobalState::GetGpuInfoCallback(mus::mojom::GpuInfoPtr gpu_info) {
   CHECK(gpu_info);
   gpu_info_ = gpu_info.Pass();
   gpu_service_.reset();
 }
 
 }  // namespace html_viewer