Added crashpad support for Windows

headless/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/chrome_build.gni")
 import("//build/util/process_version.gni")
 import("//headless/headless.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//printing/features/features.gni")
 import("//testing/test.gni")
@@ skipping 558 matching lines @@
       ]
     }
 
     deps = [
       ":headless",
       "//content/public/browser",
       "//content/public/common",
       "//net",
     ]
 
-    if (is_win) {
-      deps += [
-        "//content:sandbox_helper_win",
-        "//sandbox",
-      ]
-    }
+    deps += [
+      "//content:sandbox_helper_win",
+      "//sandbox",
+    ]
 
     configs += [ ":headless_implementation" ]
   }
 
   # Headless library with child specific dependencies (e.g., renderer). This
   # is used when no browser depencendies are needed (e.g. chrome:child_dll).
   static_library("headless_shell_child_lib") {
     sources = [
       "app/headless_shell.cc",
       "app/headless_shell.h",
@@ skipping 60 matching lines @@
   ]
 
   if (enable_basic_printing) {
     deps += [
       "//components/printing/browser",
       "//components/printing/renderer",
     ]
   }
 
   if (is_win) {
+    defines = [ "HEADLESS_USE_CRASPHAD" ]
+
     deps += [
+      "//components/crash/content/app:run_as_crashpad_handler",
       "//content:sandbox_helper_win",
       "//sandbox",
     ]
   }
 }
 
 executable("headless_shell") {
   sources = [
     "app/headless_shell_main.cc",
   ]
@@ skipping 18 matching lines @@
 
 executable("headless_example") {
   sources = [
     "app/headless_example.cc",
   ]
 
   deps = [
     ":headless_shell_lib",
   ]
 }