Copy more helper DLLs for cdb.exe.

tools/perf/chrome_telemetry_build/BUILD.gn

 # 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.
 
 import("//build/config/compiler/compiler.gni")
 
 if (is_win) {
   action("copy_cdb_to_output") {
     script = "//build/win/copy_cdb_to_output.py"
     inputs = [
       script,
     ]
     outputs = [
       "$root_out_dir/cdb/cdb.exe",
       "$root_out_dir/cdb/dbgeng.dll",
       "$root_out_dir/cdb/dbghelp.dll",
       "$root_out_dir/cdb/dbgmodel.dll",

[nednguyen, 2016/06/25 01:39:01]

Why not just copy everything in cdb/ ?

[Ken Russell (switch to Gerrit), 2016/06/27 18:46:36]

I don't know how to express that sort of wildcard dependency in GYP and GN. If
it's possible I'll be happy to change this.

+      "$root_out_dir/cdb/winext/ext.dll",
+      "$root_out_dir/cdb/winext/uext.dll",
+      "$root_out_dir/cdb/winxp/exts.dll",
+      "$root_out_dir/cdb/winxp/ntsdexts.dll",
     ]
     args = [
       rebase_path("$root_out_dir/cdb", root_out_dir),
       current_cpu,
     ]
   }
 }
 
 group("telemetry_chrome_test") {
   testonly = true
@@ skipping 49 matching lines @@
         "$root_out_dir/base.dll.pdb",
         "$root_out_dir/blink_platform.dll.pdb",
         "$root_out_dir/blink_web.dll.pdb",
         "$root_out_dir/content.dll.pdb",
       ]
     } else {
       data += [ "$root_out_dir/chrome_child.dll.pdb" ]
     }
   }
 }