Extract Peer interface out of ResourceLoaderBridge.

webkit/child/resource_loader_bridge.h

 // Copyright (c) 2012 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.
 //
 // The intent of this file is to provide a type-neutral abstraction between
 // Chrome and WebKit for resource loading. This pure-virtual interface is
 // implemented by the embedder.
 //
 // One of these objects will be created by WebKit for each request. WebKit
 // will own the pointer to the bridge, and will delete it when the request is
 // no longer needed.
 //
-// In turn, the bridge's owner on the WebKit end will implement the Peer
-// interface, which we will use to communicate notifications back.
+// In turn, the bridge's owner on the WebKit end will implement the
+// RequestDelegatePeer interface, which we will use to communicate notifications
+// back.
 
 #ifndef WEBKIT_CHILD_RESOURCE_LOADER_BRIDGE_H_
 #define WEBKIT_CHILD_RESOURCE_LOADER_BRIDGE_H_
 
-#include <utility>
-
-#include "build/build_config.h"
-#if defined(OS_POSIX)
-#include "base/file_descriptor_posix.h"
-#endif
-#include "base/memory/ref_counted.h"
-#include "base/platform_file.h"
-#include "base/values.h"
+#include "base/macros.h"
 #include "net/base/request_priority.h"
-#include "url/gurl.h"
 #include "webkit/child/webkit_child_export.h"
 
 // TODO(pilgrim) remove this once resource loader is moved to content
 // http://crbug.com/338338
 namespace content {
+class RequestDelegatePeer;
 class ResourceRequestBody;
 struct SyncLoadResponse;
 }
 
 namespace webkit_glue {
 
-struct ResourceResponseInfo;
-
 class ResourceLoaderBridge {
  public:
-  // Generated by the bridge. This is implemented by our custom resource loader
-  // within webkit. The Peer and it's bridge should have identical lifetimes
-  // as they represent each end of a communication channel.
-  //
-  // These callbacks mirror net::URLRequest::Delegate and the order and
-  // conditions in which they will be called are identical. See url_request.h
-  // for more information.
-  class WEBKIT_CHILD_EXPORT Peer {
-   public:
-    // Called as upload progress is made.
-    // note: only for requests with LOAD_ENABLE_UPLOAD_PROGRESS set
-    virtual void OnUploadProgress(uint64 position, uint64 size) = 0;
-
-    // Called when a redirect occurs.  The implementation may return false to
-    // suppress the redirect.  The given ResponseInfo provides complete
-    // information about the redirect, and new_url is the URL that will be
-    // loaded if this method returns true.  If this method returns true, the
-    // output parameter *has_new_first_party_for_cookies indicates whether the
-    // output parameter *new_first_party_for_cookies contains the new URL that
-    // should be consulted for the third-party cookie blocking policy.
-    virtual bool OnReceivedRedirect(const GURL& new_url,
-                                    const ResourceResponseInfo& info,
-                                    bool* has_new_first_party_for_cookies,
-                                    GURL* new_first_party_for_cookies) = 0;
-
-    // Called when response headers are available (after all redirects have
-    // been followed).
-    virtual void OnReceivedResponse(const ResourceResponseInfo& info) = 0;
-
-    // Called when a chunk of response data is downloaded.  This method may be
-    // called multiple times or not at all if an error occurs.  This method is
-    // only called if RequestInfo::download_to_file was set to true, and in
-    // that case, OnReceivedData will not be called.
-    // The encoded_data_length is the length of the encoded data transferred
-    // over the network, which could be different from data length (e.g. for
-    // gzipped content).
-    virtual void OnDownloadedData(int len, int encoded_data_length) = 0;
-
-    // Called when a chunk of response data is available. This method may
-    // be called multiple times or not at all if an error occurs.
-    // The encoded_data_length is the length of the encoded data transferred
-    // over the network, which could be different from data length (e.g. for
-    // gzipped content).
-    virtual void OnReceivedData(const char* data,
-                                int data_length,
-                                int encoded_data_length) = 0;
-
-    // Called when metadata generated by the renderer is retrieved from the
-    // cache. This method may be called zero or one times.
-    virtual void OnReceivedCachedMetadata(const char* data, int len) { }
-
-    // Called when the response is complete.  This method signals completion of
-    // the resource load.
-    virtual void OnCompletedRequest(
-        int error_code,
-        bool was_ignored_by_handler,
-        bool stale_copy_in_cache,
-        const std::string& security_info,
-        const base::TimeTicks& completion_time,
-        int64 total_transfer_size) = 0;
-
-   protected:
-    virtual ~Peer() {}
-  };
-
   // use WebKitPlatformSupportImpl::CreateResourceLoader() for construction, but
   // anybody can delete at any time, INCLUDING during processing of callbacks.
   WEBKIT_CHILD_EXPORT virtual ~ResourceLoaderBridge();
 
   // Call this method before calling Start() to set the request body.
   // May only be used with HTTP(S) POST requests.
   virtual void SetRequestBody(content::ResourceRequestBody* request_body) = 0;
 
   // Call this method to initiate the request.  If this method succeeds, then
   // the peer's methods will be called asynchronously to report various events.
-  virtual bool Start(Peer* peer) = 0;
+  virtual bool Start(content::RequestDelegatePeer* peer) = 0;
 
   // Call this method to cancel a request that is in progress.  This method
   // causes the request to immediately transition into the 'done' state. The
   // OnCompletedRequest method will be called asynchronously; this assumes
   // the peer is still valid.
   virtual void Cancel() = 0;
 
   // Call this method to suspend or resume a load that is in progress.  This
   // method may only be called after a successful call to the Start method.
   virtual void SetDefersLoading(bool value) = 0;
@@ skipping 19 matching lines @@
   // methods may be called to construct the body of the request.
   WEBKIT_CHILD_EXPORT ResourceLoaderBridge();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ResourceLoaderBridge);
 };
 
 }  // namespace webkit_glue
 
 #endif  // WEBKIT_CHILD_RESOURCE_LOADER_BRIDGE_H_