[tracing] Add sqlite memory statistics to tracing.

content/browser/browser_main_loop.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/browser/browser_main_loop.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/logging.h"
@@ skipping 53 matching lines @@
 #include "device/battery/battery_status_service.h"
 #include "media/audio/audio_manager.h"
 #include "media/base/media.h"
 #include "media/base/user_input_monitor.h"
 #include "media/midi/midi_manager.h"
 #include "net/base/network_change_notifier.h"
 #include "net/socket/client_socket_factory.h"
 #include "net/ssl/ssl_config_service.h"
 #include "ipc/mojo/scoped_ipc_support.h"
 #include "skia/ext/skia_memory_dump_provider.h"
+#include "sql/sql_memory_dump_provider.h"
 #include "ui/base/clipboard/clipboard.h"
 
 #if defined(USE_AURA) || (defined(OS_MACOSX) && !defined(OS_IOS))
 #include "content/browser/compositor/image_transport_factory.h"
 #endif
 
 #if defined(USE_AURA)
 #include "content/public/browser/context_factory.h"
 #include "ui/aura/env.h"
 #endif
@@ skipping 570 matching lines @@
     TRACE_EVENT0("startup",
                  "BrowserMainLoop::Subsystem:EnableAggressiveCommitDelay");
     DOMStorageArea::EnableAggressiveCommitDelay();
   }
 
   // Enable memory-infra dump providers.
   base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
       HostSharedBitmapManager::current());
   base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
       skia::SkiaMemoryDumpProvider::GetInstance());
+  base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
+      sql::SqlMemoryDumpProvider::GetInstance());

[Primiano Tucci (use gerrit), 2015/10/08 17:18:20]

Don't we need this also in child processes?

[ssid, 2015/10/08 17:20:17]

No, there are no connections opened in child processes as far as I have seen. It
connects to databases via IPC. ("content/common/database_messages.h")

 
 #if defined(TCMALLOC_TRACE_MEMORY_SUPPORTED)
   trace_memory_controller_.reset(new base::trace_event::TraceMemoryController(
       base::MessageLoop::current()->task_runner(),
       ::HeapProfilerWithPseudoStackStart, ::HeapProfilerStop,
       ::GetHeapProfile));
 #endif
 }
 
 int BrowserMainLoop::PreCreateThreads() {
@@ skipping 732 matching lines @@
   DCHECK(is_tracing_startup_for_duration_);
 
   is_tracing_startup_for_duration_ = false;
   TracingController::GetInstance()->DisableRecording(
       TracingController::CreateFileSink(
           startup_trace_file_,
           base::Bind(OnStoppedStartupTracing, startup_trace_file_)));
 }
 
 }  // namespace content