[tracing] Add names to memory-infra dumpers for debugging

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 649 matching lines @@
   if (parsed_command_line_.HasSwitch(
           switches::kEnableAggressiveDOMStorageFlushing)) {
     TRACE_EVENT0("startup",
                  "BrowserMainLoop::Subsystem:EnableAggressiveCommitDelay");
     DOMStorageArea::EnableAggressiveCommitDelay();
   }
 
   // Enable memory-infra dump providers.
   InitSkiaEventTracer();
   base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
-      HostSharedBitmapManager::current());
+      HostSharedBitmapManager::current(), "HostSharedBitmapManager", nullptr);
   base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
-      skia::SkiaMemoryDumpProvider::GetInstance());
+      skia::SkiaMemoryDumpProvider::GetInstance(), "Skia", nullptr);
   base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
-      sql::SqlMemoryDumpProvider::GetInstance());
+      sql::SqlMemoryDumpProvider::GetInstance(), "Sql", nullptr);
 
 #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 503 matching lines @@
   if (aura::Env::GetInstance()) {
     aura::Env::GetInstance()->set_context_factory(GetContextFactory());
   }
 #endif  // defined(USE_AURA)
 #endif  // defined(OS_ANDROID)
 
   // Enable the GpuMemoryBuffer dump provider with IO thread affinity. Note that
   // unregistration happens on the IO thread (See
   // BrowserProcessSubThread::IOThreadPreCleanUp).
   base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
-      BrowserGpuMemoryBufferManager::current(), io_thread_->task_runner());
+      BrowserGpuMemoryBufferManager::current(), "BrowserGpuMemoryBufferManager",
+      io_thread_->task_runner());
 #if defined(OS_ANDROID)
   base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
-      tracing::GraphicsMemoryDumpProvider::GetInstance());
+      tracing::GraphicsMemoryDumpProvider::GetInstance(), "AndroidGraphics",
+      nullptr);
 #endif
 
   {
     TRACE_EVENT0("startup", "BrowserThreadsStarted::Subsystem:AudioMan");
     audio_manager_.reset(media::AudioManager::CreateWithHangTimer(
         MediaInternals::GetInstance(), io_thread_->task_runner()));
   }
 
   {
     TRACE_EVENT0("startup", "BrowserThreadsStarted::Subsystem:MidiManager");
@@ skipping 210 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