gpu: Reduce direct use of BrowserGpuMemoryBufferManager

content/browser/browser_main_loop.cc

Index: content/browser/browser_main_loop.cc
diff --git a/content/browser/browser_main_loop.cc b/content/browser/browser_main_loop.cc
index cfda90f4d838d743de7c0d2c872469b198f3c48a..2dd4d271957a1407d0d15d9c9c96e47aa176316d 100644
--- a/content/browser/browser_main_loop.cc
+++ b/content/browser/browser_main_loop.cc
@@ -63,7 +63,6 @@
 #include "content/browser/download/download_resource_handler.h"
 #include "content/browser/download/save_file_manager.h"
 #include "content/browser/gpu/browser_gpu_channel_host_factory.h"
-#include "content/browser/gpu/browser_gpu_memory_buffer_manager.h"
 #include "content/browser/gpu/compositor_util.h"
 #include "content/browser/gpu/gpu_data_manager_impl.h"
 #include "content/browser/gpu/gpu_process_host.h"
@@ -1229,10 +1228,6 @@ void BrowserMainLoop::ShutdownThreadsAndCleanUp() {
   device_monitor_mac_.reset();
 #endif
 
-  if (BrowserGpuChannelHostFactory::instance()) {
-    BrowserGpuChannelHostFactory::instance()->CloseChannel();
-  }
-
   // Shutdown the Service Manager and IPC.
   service_manager_context_.reset();
   mojo_ipc_support_.reset();
@@ -1474,12 +1469,6 @@ int BrowserMainLoop::BrowserThreadsStarted() {
   }
 #endif
 
-  // 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(), "BrowserGpuMemoryBufferManager",
-      io_thread_->task_runner());
 #if defined(OS_ANDROID)
   base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
       tracing::GraphicsMemoryDumpProvider::GetInstance(), "AndroidGraphics",