Fix missing dependencies for //components/crash.

content/public/common/BUILD.gn

 # 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("//build/config/features.gni")
 import("//content/common/common.gni")
 import("//third_party/mojo/src/mojo/public/tools/bindings/mojom.gni")
 
 # See //content/BUILD.gn for how this works.
 group("common") {
   if (is_component_build) {
     public_deps = [
       "//content",
     ]
   } else {
     public_deps = [
       ":common_sources",
     ]
   }
 }
 
 # This target allows other targets to depend on result_codes.h which is a
 # header-only dependency, without bringing in all of content.
 source_set("result_codes") {
   sources = [
     "result_codes.h",
   ]
 }
 
+# This target allows other targets to depend on content_descriptors.h which is
+# a header-only dependency, without bringing in all of content.
+source_set("content_descriptors") {
+  sources = [
+    "content_descriptors.h",
+  ]
+  public_configs = [ "//v8:external_startup_data" ]
+}
+
 # Forces static linking for targets using the static_switches constants, even
 # in the component build. This config makes it impossible to use the static
 # switches target and use the rest of content at the same time, because the
 # component export flags won't be consistent.
 config("static_switches_defines") {
   defines = [ "COMPILE_CONTENT_STATICALLY" ]
 }
 
 # This target allows you to use the content_switches constants and statically
 # link to it, without depending on the rest of content. This is only for use
@@ skipping 46 matching lines @@
 }
 
 mojom("mojo_bindings") {
   sources = [
     "background_sync.mojom",
     "mojo_geoposition.mojom",
     "permission_status.mojom",
     "service_worker_event_status.mojom",
   ]
 }