Add support for Sawbuck to Content Shell (ETW tracing).

content/shell/shell_main_delegate.cc

 // Copyright (c) 2012 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 "content/shell/shell_main_delegate.h"
 
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "content/public/browser/browser_main_runner.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/url_constants.h"
 #include "content/shell/shell_browser_main.h"
 #include "content/shell/shell_content_browser_client.h"
 #include "content/shell/shell_content_renderer_client.h"
 #include "content/shell/shell_switches.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/ui_base_paths.h"
 
 #if defined(OS_ANDROID)
 #include "base/global_descriptors_posix.h"
 #include "content/shell/android/shell_descriptors.h"
 #endif
 
 #if defined(OS_MACOSX)
 #include "content/shell/paths_mac.h"
 #endif  // OS_MACOSX
 
+#if defined(OS_WIN)
+#include "base/logging_win.h"
+#include <initguid.h>
+#endif
+
 namespace {
 
+#if defined(OS_WIN)
+// If "Content Shell" doesn't show up in your list of trace providers in
+// Sawbuck, add these registry entries to your machine (NOTE the optional
+// Wow6432Node key for x64 machines):
+// 1. Find:  HKLM\SOFTWARE\[Wow6432Node\]Google\Sawbuck\Providers
+// 2. Add a subkey with the name "{6A3E50A4-7E15-4099-8413-EC94D8C2A4B6}"
+// 3. Add these values:
+//    "default_flags"=dword:00000001
+//    "default_level"=dword:00000004
+//    @="Content Shell"
+
+// {6A3E50A4-7E15-4099-8413-EC94D8C2A4B6}
+const GUID kContentShellProviderName = {
+    0x6a3e50a4, 0x7e15, 0x4099,
+        { 0x84, 0x13, 0xec, 0x94, 0xd8, 0xc2, 0xa4, 0xb6 } };
+#endif
+
 void InitLogging() {
   FilePath log_filename;
   PathService::Get(base::DIR_EXE, &log_filename);
   log_filename = log_filename.AppendASCII("content_shell.log");
   logging::InitLogging(
       log_filename.value().c_str(),
       logging::LOG_ONLY_TO_FILE,
       logging::LOCK_LOG_FILE,
       logging::DELETE_OLD_LOG_FILE,
       logging::DISABLE_DCHECK_FOR_NON_OFFICIAL_RELEASE_BUILDS);
   logging::SetLogItems(true, true, true, true);
 }
 
 }  // namespace
 
 namespace content {
 
 ShellMainDelegate::ShellMainDelegate() {
 }
 
 ShellMainDelegate::~ShellMainDelegate() {
 #if defined(OS_ANDROID)
   NOTREACHED();
 #endif
 }
 
 bool ShellMainDelegate::BasicStartupComplete(int* exit_code) {
+#if defined(OS_WIN)
+  // Enable trace control and transport through event tracing for Windows.
+  logging::LogEventProvider::Initialize(kContentShellProviderName);
+#endif
+
   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kDumpRenderTree)) {
     InitLogging();
     CommandLine::ForCurrentProcess()->AppendSwitch(
         switches::kAllowFileAccessFromFiles);
   }
 #if defined(OS_MACOSX)
   OverrideFrameworkBundlePath();
 #endif
   SetContentClient(&content_client_);
   return false;
@@ skipping 63 matching lines @@
   browser_client_.reset(new ShellContentBrowserClient);
   return browser_client_.get();
 }
 
 ContentRendererClient* ShellMainDelegate::CreateContentRendererClient() {
   renderer_client_.reset(new ShellContentRendererClient);
   return renderer_client_.get();
 }
 
 }  // namespace content