mandoline: Add automatic tracing at mojo call sites.

components/pdf_viewer/pdf_viewer.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 "base/bind.h"
 #include "base/callback.h"
 #include "base/containers/hash_tables.h"
 #include "base/memory/scoped_ptr.h"
 #include "components/mus/public/cpp/scoped_window_ptr.h"
 #include "components/mus/public/cpp/types.h"
@@ skipping 17 matching lines @@
 #include "mojo/application/public/cpp/service_provider_impl.h"
 #include "mojo/application/public/interfaces/content_handler.mojom.h"
 #include "mojo/application/public/interfaces/shell.mojom.h"
 #include "mojo/common/data_pipe_utils.h"
 #include "mojo/converters/geometry/geometry_type_converters.h"
 #include "mojo/converters/surfaces/surfaces_type_converters.h"
 #include "mojo/converters/surfaces/surfaces_utils.h"
 #include "mojo/public/c/gles2/gles2.h"
 #include "mojo/public/c/system/main.h"
 #include "mojo/public/cpp/bindings/binding.h"
+#include "mojo/services/tracing/public/cpp/tracing_impl.h"
 #include "third_party/pdfium/public/fpdf_ext.h"
 #include "third_party/pdfium/public/fpdfview.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/mojo/events/input_events.mojom.h"
 #include "ui/mojo/events/input_key_codes.mojom.h"
 #include "ui/mojo/geometry/geometry.mojom.h"
 #include "ui/mojo/geometry/geometry_util.h"
 #include "v8/include/v8.h"
 
 const uint32_t g_background_color = 0xFF888888;
@@ skipping 548 matching lines @@
  public:
   PDFViewer() {
     v8::V8::InitializeICU();
     FPDF_InitLibrary();
   }
 
   ~PDFViewer() override { FPDF_DestroyLibrary(); }
 
  private:
   // ApplicationDelegate:
+  void Initialize(mojo::ApplicationImpl* app) override {
+    tracing_.Initialize(app);
+  }
+
   bool ConfigureIncomingConnection(
       mojo::ApplicationConnection* connection) override {
     connection->AddService(this);
     return true;
   }
 
   // InterfaceFactory<ContentHandler>:
   void Create(mojo::ApplicationConnection* connection,
               mojo::InterfaceRequest<mojo::ContentHandler> request) override {
     new ContentHandlerImpl(request.Pass());
   }
 
+  mojo::TracingImpl tracing_;
+
   DISALLOW_COPY_AND_ASSIGN(PDFViewer);
 };
 }  // namespace
 }  // namespace pdf_viewer
 
 MojoResult MojoMain(MojoHandle application_request) {
   mojo::ApplicationRunner runner(new pdf_viewer::PDFViewer());
   return runner.Run(application_request);
 }