content: Port content_shell_crash_service target to GN build.

content/shell/BUILD.gn

Index: content/shell/BUILD.gn
diff --git a/content/shell/BUILD.gn b/content/shell/BUILD.gn
index 95450b5343a6e526711142be01b3b5a077996362..e894419ffcc4ce53f618148fcc886b9f5c2a1dd2 100644
--- a/content/shell/BUILD.gn
+++ b/content/shell/BUILD.gn
@@ -555,3 +555,20 @@ if (is_mac || is_win) {
     }
   }
 }
+
+if (is_win) {
+  # GYP version: content/content_shell_and_tests.gyp:content_shell_crash_service
+  executable("crash_service") {
+    sources = [
+      "tools/content_shell_crash_service.cc",
+    ]
+
+    deps = [
+      "//base",
+      "//components/crash/tools:crash_service",
+    ]
+
+    configs -= [ "//build/config/win:console" ]
+    configs += [ "//build/config/win:windowed" ]
+  }
+}