[tracing] Add WebCache memory usage in Blink to chrome://tracing

content/child/blink_platform_impl.cc

 // Copyright 2014 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/child/blink_platform_impl.h"
 
 #include <math.h>
 
 #include <vector>
 
@@ skipping 17 matching lines @@
 #include "base/thread_task_runner_handle.h"
 #include "base/threading/platform_thread.h"
 #include "base/time/time.h"
 #include "base/trace_event/memory_allocator_dump_guid.h"
 #include "base/trace_event/memory_dump_manager.h"
 #include "base/trace_event/trace_event.h"
 #include "blink/public/resources/grit/blink_image_resources.h"
 #include "blink/public/resources/grit/blink_resources.h"
 #include "components/mime_util/mime_util.h"
 #include "components/scheduler/child/webthread_impl_for_worker_scheduler.h"
+#include "components/web_cache/renderer/web_cache_memory_dump_provider.h"
 #include "content/app/resources/grit/content_resources.h"
 #include "content/app/strings/grit/content_strings.h"
 #include "content/child/background_sync/background_sync_provider.h"
 #include "content/child/background_sync/background_sync_provider_thread_proxy.h"
 #include "content/child/child_thread_impl.h"
 #include "content/child/content_child_helpers.h"
 #include "content/child/geofencing/web_geofencing_provider_impl.h"
 #include "content/child/navigator_connect/service_port_provider.h"
 #include "content/child/notifications/notification_dispatcher.h"
 #include "content/child/notifications/notification_manager.h"
@@ skipping 406 matching lines @@
     geofencing_provider_.reset(new WebGeofencingProviderImpl(
         ChildThreadImpl::current()->thread_safe_sender()));
     thread_safe_sender_ = ChildThreadImpl::current()->thread_safe_sender();
     notification_dispatcher_ =
         ChildThreadImpl::current()->notification_dispatcher();
     push_dispatcher_ = ChildThreadImpl::current()->push_dispatcher();
     permission_client_.reset(new PermissionDispatcher(
         ChildThreadImpl::current()->service_registry()));
     sync_provider_.reset(new BackgroundSyncProvider(
         ChildThreadImpl::current()->service_registry()));
+
+    base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
+        web_cache::WebCacheMemoryDumpProvider::GetInstance(),
+        main_thread_task_runner_);
   }
 }
 
 void BlinkPlatformImpl::UpdateWebThreadTLS(blink::WebThread* thread) {
   DCHECK(!current_thread_slot_.Get());
   current_thread_slot_.Set(thread);
 }
 
 BlinkPlatformImpl::~BlinkPlatformImpl() {
+  base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
+      web_cache::WebCacheMemoryDumpProvider::GetInstance());
 }
 
 WebURLLoader* BlinkPlatformImpl::createURLLoader() {
   ChildThreadImpl* child_thread = ChildThreadImpl::current();
   // There may be no child thread in RenderViewTests.  These tests can still use
   // data URLs to bypass the ResourceDispatcher.
   return new WebURLLoaderImpl(
       child_thread ? child_thread->resource_dispatcher() : NULL,
       MainTaskRunnerForCurrentThread());
 }
@@ skipping 881 matching lines @@
   return WebString::fromUTF8(ui::KeycodeConverter::DomCodeToCodeString(
       static_cast<ui::DomCode>(dom_code)));
 }
 
 int BlinkPlatformImpl::domEnumFromCodeString(const WebString& code) {
   return static_cast<int>(ui::KeycodeConverter::CodeStringToDomCode(
       code.utf8().data()));
 }
 
 }  // namespace content