Adding PE TimeStamp to chrome trace to ease retrieving debug information

components/tracing/common/process_metrics_memory_dump_provider.cc

 // Copyright 2015 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 "components/tracing/common/process_metrics_memory_dump_provider.h"
 
 #include <fcntl.h>
 #include <stdint.h>
 
 #include <map>
@@ skipping 27 matching lines @@
 #include "base/numerics/safe_math.h"
 #include "base/process/process_metrics.h"
 #endif  // defined(OS_MACOSX)
 
 #if defined(OS_WIN)
 #include <psapi.h>
 #include <tchar.h>
 #include <windows.h>
 
 #include <base/strings/sys_string_conversions.h>
+#include <base/win/pe_image.h>
 #include <base/win/win_util.h>
 #endif  // defined(OS_WIN)
 
 namespace tracing {
 
 namespace {
 
 base::LazyInstance<
     std::map<base::ProcessId,
              std::unique_ptr<ProcessMetricsMemoryDumpProvider>>>::Leaky
@@ skipping 208 matching lines @@
 
     MODULEINFO module_info;
     if (!::GetModuleInformation(::GetCurrentProcess(), modules[i],
                                 &module_info, sizeof(MODULEINFO))) {
       continue;
     }
     base::trace_event::ProcessMemoryMaps::VMRegion region;
     region.size_in_bytes = module_info.SizeOfImage;
     region.mapped_file = base::SysWideToNativeMB(module_name);
     region.start_address = reinterpret_cast<uint64_t>(module_info.lpBaseOfDll);
+
+    // The PE header field |TimeDateStamp| is required to build the PE code
+    // identifier which is used as a key to query symbols servers.
+    base::win::PEImage pe_image(module_info.lpBaseOfDll);
+    region.module_timestamp = pe_image.GetNTHeaders()->FileHeader.TimeDateStamp;
+
     pmd->process_mmaps()->AddVMRegion(region);
   }
   if (!pmd->process_mmaps()->vm_regions().empty())
     pmd->set_has_process_mmaps();
   return true;
 }
 #endif  // defined(OS_WIN)
 
 #if defined(OS_MACOSX)
 
@@ skipping 456 matching lines @@
 #endif
 }
 
 void ProcessMetricsMemoryDumpProvider::SuspendFastMemoryPolling() {
 #if defined(OS_LINUX) || defined(OS_ANDROID)
   fast_polling_statm_fd_.reset();
 #endif
 }
 
 }  // namespace tracing