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

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 692 matching lines @@
     const unsigned char* category_group_enabled,
     const char* name,
     TraceEventHandle handle) {
   base::trace_event::TraceEventHandle traceEventHandle;
   memcpy(&traceEventHandle, &handle, sizeof(handle));
   TRACE_EVENT_API_UPDATE_TRACE_EVENT_DURATION(
       category_group_enabled, name, traceEventHandle);
 }
 
 void BlinkPlatformImpl::registerMemoryDumpProvider(
-    blink::WebMemoryDumpProvider* wmdp) {
+    blink::WebMemoryDumpProvider* wmdp, const char* name) {
   WebMemoryDumpProviderAdapter* wmdp_adapter =
       new WebMemoryDumpProviderAdapter(wmdp);
   bool did_insert =
       memory_dump_providers_.add(wmdp, make_scoped_ptr(wmdp_adapter)).second;
   if (!did_insert)
     return;
   wmdp_adapter->set_is_registered(true);
   base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
-      wmdp_adapter, base::ThreadTaskRunnerHandle::Get());
+      wmdp_adapter, name, base::ThreadTaskRunnerHandle::Get());
 }
 
 void BlinkPlatformImpl::unregisterMemoryDumpProvider(
     blink::WebMemoryDumpProvider* wmdp) {
   scoped_ptr<WebMemoryDumpProviderAdapter> wmdp_adapter =
       memory_dump_providers_.take_and_erase(wmdp);
   if (!wmdp_adapter)
     return;
   base::trace_event::MemoryDumpManager::GetInstance()->UnregisterDumpProvider(
       wmdp_adapter.get());
@@ skipping 592 matching lines @@
   return WebString::fromUTF8(ui::KeycodeConverter::DomKeyToKeyString(
       static_cast<ui::DomKey>(dom_key)));
 }
 
 int BlinkPlatformImpl::domKeyEnumFromString(const WebString& key_string) {
   return static_cast<int>(
       ui::KeycodeConverter::KeyStringToDomKey(key_string.utf8()));
 }
 
 }  // namespace content