Make url_request_context dumps include context names

net/url_request/url_request_context.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 "net/url_request/url_request_context.h"
 
 #include <inttypes.h>
 
 #include "base/compiler_specific.h"
 #include "base/debug/alias.h"
@@ skipping 126 matching lines @@
 }
 
 bool URLRequestContext::OnMemoryDump(
     const base::trace_event::MemoryDumpArgs& args,
     base::trace_event::ProcessMemoryDump* pmd) {
   if (name_.empty())
     name_ = "unknown";
 
   SSLClientSocketImpl::DumpSSLClientSessionMemoryStats(pmd);
 
-  std::string dump_name = base::StringPrintf(
-      "net/url_request_context_0x%" PRIxPTR, reinterpret_cast<uintptr_t>(this));
+  std::string dump_name =
+      base::StringPrintf("net/url_request_context/%s/0x%" PRIxPTR,
+                         name_.c_str(), reinterpret_cast<uintptr_t>(this));

[ssid, 2017/03/27 18:43:15]

Are we sure that we know all the possible names here?
Do you mind changing the URLRequestContext::set_name to take const char* instead
of std::string and |name_| also as const char*?
set_name(std::string) would generally mean users can generate strings custom
strings and we might not notice it. 
set_name(const char*) with a comment saying only string literals are allowed as
names, would be future proof here.

[xunjieli, 2017/03/27 19:24:55]

Done.

   base::trace_event::MemoryAllocatorDump* dump =
       pmd->CreateAllocatorDump(dump_name);
   dump->AddScalar(base::trace_event::MemoryAllocatorDump::kNameObjectCount,
                   base::trace_event::MemoryAllocatorDump::kUnitsObjects,
                   url_requests_->size());
-  if (args.level_of_detail !=
-      base::trace_event::MemoryDumpLevelOfDetail::BACKGROUND) {
-    dump->AddString("origin",
-                    base::trace_event::MemoryAllocatorDump::kTypeString, name_);
-  }
   HttpTransactionFactory* transaction_factory = http_transaction_factory();
   if (transaction_factory) {
     HttpNetworkSession* network_session = transaction_factory->GetSession();
     if (network_session)
       network_session->DumpMemoryStats(pmd, dump->absolute_name());
     HttpCache* http_cache = transaction_factory->GetCache();
     if (http_cache)
       http_cache->DumpMemoryStats(pmd, dump->absolute_name());
   }
   if (sdch_manager_)
     sdch_manager_->DumpMemoryStats(pmd, dump_name);
   return true;
 }
 
 }  // namespace net