Fix and refactor downloaded file handling in the loading stack

content/browser/loader/DEPS

Index: content/browser/loader/DEPS
diff --git a/content/browser/loader/DEPS b/content/browser/loader/DEPS
index b655be17bdbbc933bdc9b2474afb7888d4d8d325..e2e9f46a485518cab06fd5050a87f59054e7acd0 100644
--- a/content/browser/loader/DEPS
+++ b/content/browser/loader/DEPS
@@ -11,6 +11,7 @@ specific_include_rules = {
   "async_resource_handler\.(cc|h)": [
     "-content",
     "+content/browser/loader/async_resource_handler.h",
+    "+content/browser/loader/downloaded_temp_file_impl.h",
     "+content/browser/loader/netlog_observer.h",
     "+content/browser/loader/resource_buffer.h",
     "+content/browser/loader/resource_dispatcher_host_impl.h",
@@ -63,6 +64,13 @@ specific_include_rules = {
     "+content/common/resource_messages.h",
     "+content/common/resource_request.h",
   ],
+  "downloaded_temp_file_impl\.(cc|h)": [
+    "-content",
+    "+content/browser/loader/downloaded_temp_file_impl.h",
+    "+content/browser/loader/resource_dispatcher_host_impl.h",
+    "+content/common/content_export.h",
+    "+content/common/url_loader_factory.mojom.h"
+  ],
   "resource_buffer.*\.(cc|h)": [
     "-content",
     "+content/browser/loader/resource_buffer.h",
@@ -80,6 +88,7 @@ specific_include_rules = {
   "mojo_async_resource_handler\.(cc|h)": [
     "-content",
     "+content/browser/loader/async_resource_handler.h",
+    "+content/browser/loader/downloaded_temp_file_impl.h",
     "+content/browser/loader/mojo_async_resource_handler.h",
     "+content/browser/loader/test_url_loader_client.h",
     "+content/browser/loader/netlog_observer.h",
@@ -134,6 +143,7 @@ specific_include_rules = {
     "-content",
     "+content/browser/loader/async_resource_handler.h",
     "+content/browser/loader/async_revalidation_manager.h",
+    "+content/browser/loader/downloaded_temp_file_impl.h",
     "+content/browser/loader/global_routing_id.h",
     "+content/browser/loader/loader_delegate.h",
     "+content/browser/loader/mojo_async_resource_handler.h",