Copy dbgcore.dll to the build directory.

build/vs_toolchain.py

 #!/usr/bin/env python
 # 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.
 
 import glob
 import json
 import os
 import pipes
 import platform
@@ skipping 293 matching lines @@
   _CopyRuntime(target_dir, runtime_dir, target_cpu, debug=False)
   if configuration == 'Debug':
     _CopyRuntime(target_dir, runtime_dir, target_cpu, debug=True)
   else:
     _CopyPGORuntime(target_dir, target_cpu)
 
   _CopyDebugger(target_dir, target_cpu)
 
 
 def _CopyDebugger(target_dir, target_cpu):
-  """Copy dbghelp.dll into the requested directory as needed.
+  """Copy dbghelp.dll and dbgcore.dll into the requested directory as needed.
 
   target_cpu is one of 'x86' or 'x64'.
 
   dbghelp.dll is used when Chrome needs to symbolize stacks. Copying this file
   from the SDK directory avoids using the system copy of dbghelp.dll which then
   ensures compatibility with recent debug information formats, such as VS
   2017 /debug:fastlink PDBs.
+
+  dbgcore.dll is needed when using some functions from dbghelp.dll (like
+  MinidumpWriteDump).
   """
   win_sdk_dir = SetEnvironmentAndGetSDKDir()
   if not win_sdk_dir:
     return
 
-  debug_file = 'dbghelp.dll'
-  full_path = os.path.join(win_sdk_dir, 'Debuggers', target_cpu, debug_file)
-  if not os.path.exists(full_path):
-    raise Exception('dbghelp.dll not found in "%s"\r\nYou must install the '
-                    '"Debugging Tools for Windows" feature from the Windows '
-                    '10 SDK.' % full_path)
-  target_path = os.path.join(target_dir, debug_file)
-  _CopyRuntimeImpl(target_path, full_path)
+  debug_files = ['dbghelp.dll', 'dbgcore.dll']
+  for debug_file in debug_files:
+    full_path = os.path.join(win_sdk_dir, 'Debuggers', target_cpu, debug_file)
+    if not os.path.exists(full_path):
+      raise Exception('%s not found in "%s"\r\nYou must install the '
+                      '"Debugging Tools for Windows" feature from the Windows '
+                      '10 SDK.' % (debug_file, full_path))
+    target_path = os.path.join(target_dir, debug_file)
+    _CopyRuntimeImpl(target_path, full_path)
 
 
 def _GetDesiredVsToolchainHashes():
   """Load a list of SHA1s corresponding to the toolchains that we want installed
   to build with."""
   env_version = GetVisualStudioVersion()
   if env_version == '2015':
     # Update 3 final with 10.0.15063.468 SDK and no vctip.exe.
     return ['f53e4598951162bad6330f7a167486c7ae5db1e5']
   if env_version == '2017':
@@ skipping 95 matching lines @@
       'copy_dlls': CopyDlls,
   }
   if len(sys.argv) < 2 or sys.argv[1] not in commands:
     print >>sys.stderr, 'Expected one of: %s' % ', '.join(commands)
     return 1
   return commands[sys.argv[1]](*sys.argv[2:])
 
 
 if __name__ == '__main__':
   sys.exit(main())