Initial PlzNavigate RDH-side logic.

content/browser/frame_host/navigation_request.cc

 // 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.
 
 #include "content/browser/frame_host/navigation_request.h"
 
 #include "base/logging.h"
+#include "content/browser/frame_host/frame_tree_node.h"
 #include "content/browser/frame_host/navigation_request_info.h"
-#include "content/browser/loader/resource_dispatcher_host_impl.h"
+#include "content/browser/frame_host/navigator.h"
 #include "content/common/resource_request_body.h"
-#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/stream_handle.h"
+#include "net/url_request/redirect_info.h"
 
 namespace content {
 
-namespace {
-
-// The next available browser-global navigation request ID.
-static int64 next_navigation_request_id_ = 0;
-
-void OnBeginNavigation(const CommonNavigationParams& common_params,
-                       const NavigationRequestInfo& info,
-                       scoped_refptr<ResourceRequestBody> request_body,
-                       int64 navigation_request_id,
-                       int64 frame_tree_node_id) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-  ResourceDispatcherHostImpl::Get()->StartNavigationRequest(
-      common_params,
-      info,
-      request_body,
-      navigation_request_id,
-      frame_tree_node_id);
-}
-
-void CancelNavigationRequest(int64 navigation_request_id,
-                             int64 frame_tree_node_id) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-  ResourceDispatcherHostImpl::Get()->CancelNavigationRequest(
-      navigation_request_id, frame_tree_node_id);
-}
-
-}  // namespace
-
 NavigationRequest::NavigationRequest(
-    int64 frame_tree_node_id,
+    BrowserContext* browser_context,
+    FrameTreeNode* frame_tree_node,
     const CommonNavigationParams& common_params,
     const CommitNavigationParams& commit_params)
-    : navigation_request_id_(++next_navigation_request_id_),
-      frame_tree_node_id_(frame_tree_node_id),
+    : browser_context_(browser_context),
+      frame_tree_node_(frame_tree_node),
       common_params_(common_params),
       commit_params_(commit_params) {
 }
 
 NavigationRequest::~NavigationRequest() {
 }
 
 void NavigationRequest::BeginNavigation(
     scoped_ptr<NavigationRequestInfo> info,
     scoped_refptr<ResourceRequestBody> request_body) {
-  info_ = info.Pass();
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  BrowserThread::PostTask(
-      BrowserThread::IO,
-      FROM_HERE,
-      base::Bind(&OnBeginNavigation,
-                 common_params_,
-                 *info_,
-                 request_body,
-                 navigation_request_id_,
-                 frame_tree_node_id_));
+  DCHECK(!loader_);
+  loader_ = NavigationURLLoader::Create(
+      browser_context_, frame_tree_node_->frame_tree_node_id(),
+      common_params_, info.Pass(), request_body.get(), this);
 }
 
-void NavigationRequest::CancelNavigation() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  BrowserThread::PostTask(
-      BrowserThread::IO,
-      FROM_HERE,
-      base::Bind(&CancelNavigationRequest,
-                 navigation_request_id_, frame_tree_node_id_));
+void NavigationRequest::OnRequestRedirected(
+    const net::RedirectInfo& redirect_info,
+    ResourceResponse* response) {
+  common_params_.url = redirect_info.new_url;
+
+  // TODO(davidben): This where prerender and navigation_interceptor should be
+  // integrated. For now, just always follow all redirects.
+  loader_->FollowRedirect();
+}
+
+void NavigationRequest::OnResponseStarted(ResourceResponse* response,
+                                          scoped_ptr<StreamHandle> body) {
+  frame_tree_node_->navigator()->CommitNavigation(frame_tree_node_,
+                                                  response, body.Pass());
+}
+
+void NavigationRequest::OnRequestFailed(int net_error) {
+  // TODO(davidben): Network failures should display a network error page.
+  NOTIMPLEMENTED();
 }
 
 }  // namespace content