Use label name to generate PDB names in GN.

build/toolchain/win/BUILD.gn

 # Copyright (c) 2013 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/win/visual_studio_version.gni")
 import("//build/toolchain/goma.gni")
 import("//build/toolchain/toolchain.gni")
 
 # Should only be running on Windows.
 assert(is_win)
@@ skipping 49 matching lines @@
     # Make these apply to all tools below.
     lib_switch = ""
     lib_dir_switch = "/LIBPATH:"
 
     # Object files go in this directory.
     object_subdir = "{{target_out_dir}}/{{label_name}}"
 
     tool("cc") {
       rspfile = "{{output}}.rsp"
       precompiled_header_type = "msvc"
-      pdbname = "{{target_out_dir}}/{{target_output_name}}_c.pdb"
+      pdbname = "{{target_out_dir}}/{{label_name}}_c.pdb"
       command = "ninja -t msvc -e $env -- $cl /nologo /showIncludes /FC @$rspfile /c {{source}} /Fo{{output}} /Fd$pdbname"
       depsformat = "msvc"
       description = "CC {{output}}"
       outputs = [
         "$object_subdir/{{source_name_part}}.obj",
       ]
       rspfile_content = "{{defines}} {{include_dirs}} {{cflags}} {{cflags_c}}"
     }
 
     tool("cxx") {
       rspfile = "{{output}}.rsp"
       precompiled_header_type = "msvc"
 
       # The PDB name needs to be different between C and C++ compiled files.
-      pdbname = "{{target_out_dir}}/{{target_output_name}}_cc.pdb"
+      pdbname = "{{target_out_dir}}/{{label_name}}_cc.pdb"
       command = "ninja -t msvc -e $env -- $cl /nologo /showIncludes /FC @$rspfile /c {{source}} /Fo{{output}} /Fd$pdbname"
       depsformat = "msvc"
       description = "CXX {{output}}"
       outputs = [
         "$object_subdir/{{source_name_part}}.obj",
       ]
       rspfile_content = "{{defines}} {{include_dirs}} {{cflags}} {{cflags_cc}}"
     }
 
     tool("rc") {
@@ skipping 206 matching lines @@
 
   msvc_toolchain("winrt_x64") {
     environment = "environment.winrt_x64"
     cl = "${goma_prefix}\"${vc_bin_dir}/cl.exe\""
     is_clang = false
 
     current_cpu = "x64"
     current_os = current_os
   }
 }