network service: pass PlzNavigate resulting data via mojo data pipe

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 334cdbae23ed6bdebd46b145e896f50eaf807c91..47ee33bdcd493625f2116a749c87f48ddef4b6b9 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -1587,6 +1587,8 @@ bool RenderFrameImpl::OnMessageReceived(const IPC::Message& msg) {
     IPC_MESSAGE_HANDLER(FrameMsg_ExtractSmartClipData, OnExtractSmartClipData)
     IPC_MESSAGE_HANDLER(FrameMsg_UpdateOpener, OnUpdateOpener)
     IPC_MESSAGE_HANDLER(FrameMsg_CommitNavigation, OnCommitNavigation)
+    IPC_MESSAGE_HANDLER(FrameMsg_CommitNavigationNetworkService,
+                        OnCommitNavigationNetworkService)
     IPC_MESSAGE_HANDLER(FrameMsg_DidUpdateSandboxFlags, OnDidUpdateSandboxFlags)
     IPC_MESSAGE_HANDLER(FrameMsg_SetFrameOwnerProperties,
                         OnSetFrameOwnerProperties)
@@ -5226,6 +5228,38 @@ void RenderFrameImpl::OnCommitNavigation(
 }
 
 // PlzNavigate
+void RenderFrameImpl::OnCommitNavigationNetworkService(
+    const ResourceResponseHead& response,
+    mojo::DataPipeConsumerHandle handle,
+    const CommonNavigationParams& common_params,
+    const RequestNavigationParams& request_params) {
+  CHECK(IsBrowserSideNavigationEnabled());
+  // This will override the url requested by the WebURLLoader, as well as
+  // provide it with the response to the request.
+  std::unique_ptr<StreamOverrideParameters> stream_override(
+      new StreamOverrideParameters());
+  stream_override->consumer_handle = mojo::ScopedDataPipeConsumerHandle(handle);
+  stream_override->response = response;
+  stream_override->redirects = request_params.redirects;
+  stream_override->redirect_responses = request_params.redirect_response;
+  stream_override->redirect_infos = request_params.redirect_infos;
+
+  // If the request was initiated in the context of a user gesture then make
+  // sure that the navigation also executes in the context of a user gesture.
+  std::unique_ptr<blink::WebScopedUserGesture> gesture(
+      request_params.has_user_gesture ? new blink::WebScopedUserGesture(frame_)
+                                      : nullptr);
+
+  browser_side_navigation_pending_ = false;
+
+  NavigateInternal(common_params, StartNavigationParams(), request_params,
+                   std::move(stream_override));
+
+  // Don't add code after this since NavigateInternal may have destroyed this
+  // RenderFrameImpl.
+}
+
+// PlzNavigate
 void RenderFrameImpl::OnFailedNavigation(
     const CommonNavigationParams& common_params,
     const RequestNavigationParams& request_params,