gpu shader cache: Clarify lifetime/ownership/threadiness of objects.

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 <stddef.h>
 
 #include <string>
 #include <utility>
@@ skipping 36 matching lines @@
 #include "content/browser/dom_storage/dom_storage_area.h"
 #include "content/browser/download/download_resource_handler.h"
 #include "content/browser/download/save_file_manager.h"
 #include "content/browser/gamepad/gamepad_service.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"
 #include "content/browser/gpu/gpu_process_host_ui_shim.h"
+#include "content/browser/gpu/shader_disk_cache.h"
 #include "content/browser/histogram_synchronizer.h"
 #include "content/browser/loader/resource_dispatcher_host_impl.h"
 #include "content/browser/loader_delegate_impl.h"
 #include "content/browser/media/media_internals.h"
 #include "content/browser/memory/memory_coordinator.h"
 #include "content/browser/net/browser_online_state_observer.h"
 #include "content/browser/renderer_host/media/media_stream_manager.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/service_manager/service_manager_context.h"
 #include "content/browser/speech/speech_recognition_manager_impl.h"
@@ skipping 1153 matching lines @@
   base::PlatformThread::SetCurrentThreadPriority(base::ThreadPriority::DISPLAY);
 #endif
 
 #if defined(ENABLE_VULKAN)
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableVulkan)) {
     gpu::InitializeVulkan();
   }
 #endif
 
+  // Initialize the GPU shader cache. This needs to be initialized before
+  // BrowserGpuChannelHostFactory below, since that depends on an initialized
+  // ShaderCacheFactory.
+  ShaderCacheFactory::InitInstance(
+      BrowserThread::GetTaskRunnerForThread(BrowserThread::IO),
+      BrowserThread::GetTaskRunnerForThread(BrowserThread::CACHE));
+
   bool always_uses_gpu = true;
   bool established_gpu_channel = false;
 #if defined(OS_ANDROID)
   // TODO(crbug.com/439322): This should be set to |true|.
   established_gpu_channel = false;
   always_uses_gpu = ShouldStartGpuProcessOnBrowserStartup();
   BrowserGpuChannelHostFactory::Initialize(established_gpu_channel);
   ContextProviderFactoryImpl::Initialize(
       BrowserGpuChannelHostFactory::instance());
   ui::ContextProviderFactory::SetInstance(
@@ skipping 352 matching lines @@
     scoped_refptr<base::SingleThreadTaskRunner> worker_task_runner =
         audio_thread_->task_runner();
     audio_manager_ = media::AudioManager::Create(std::move(audio_task_runner),
                                                  std::move(worker_task_runner),
                                                  MediaInternals::GetInstance());
   }
   CHECK(audio_manager_);
 }
 
 }  // namespace content