Remove use of WebContentsImpl from ResourceDispatcherHostImpl

content/browser/loader/loader_delegate.h

Index: content/browser/loader/loader_delegate.h
diff --git a/content/browser/loader/loader_delegate.h b/content/browser/loader/loader_delegate.h
index d92e668dc46947f15997e03ff9bc368b8597224d..7912b5a113b7cf27beb8bf2377edad0b39e8fec4 100644
--- a/content/browser/loader/loader_delegate.h
+++ b/content/browser/loader/loader_delegate.h
@@ -7,6 +7,10 @@
 
 #include <inttypes.h>
 
+#include <memory>
+
+#include "content/common/content_export.h"
+#include "content/public/browser/resource_request_details.h"
 #include "net/base/load_states.h"
 
 class GURL;
@@ -20,7 +24,7 @@ namespace content {
 // networking service. All methods in this interface should be asynchronous,
 // since eventually this will be a Mojo interface. See https://crbug.com/622050

[mmenke, 2016/06/29 15:17:13]

In a mojo world, will we still be using render_process_id / render_frame_hosts,
or should Mojo eventually take care of that (Not sure how we'd do that - a
delegate per frame host?).

Just wondering what magic IDs we'll need to keep around, and thinking about
requests that won't have either ID, as they're not from a renderer...And
requests that will have a child_id and route_id, but no render_frame_host, if
they're from another type of process.

[scottmg, 2016/06/29 17:55:40]

I... have no idea :) I do find all the styles of int IDs a bit confusing now, so
it'd be nice if in the future things could be more directly connected to each
other in the future to avoid having a manager that dispatches amongst them.

 // and https://crbug.com/598073.
-class LoaderDelegate {
+class CONTENT_EXPORT LoaderDelegate {
  public:
   virtual ~LoaderDelegate() {}
 
@@ -32,6 +36,18 @@ class LoaderDelegate {
                                 const net::LoadStateWithParam& load_state,
                                 uint64_t upload_position,
                                 uint64_t upload_size) = 0;
+
+  // Notification that a response has been received for a resource request.
+  virtual void DidGetResourceResponseStart(
+      int render_process_id,
+      int render_frame_host,
+      std::unique_ptr<ResourceRequestDetails> details) = 0;
+
+  // Notification that a redirect was received while requesting a resource.
+  virtual void DidGetRedirectForResourceRequest(
+      int render_process_id,
+      int render_frame_host,
+      std::unique_ptr<ResourceRedirectDetails> details) = 0;
 };
 
 }  // namespace content