Add more navigation tracing to RenderFrameHost and NavigationRequest.

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 <utility>
 
 #include "base/memory/ptr_util.h"
 #include "content/browser/appcache/appcache_navigation_handle.h"
@@ skipping 298 matching lines @@
       request_params_(request_params),
       browser_initiated_(browser_initiated),
       state_(NOT_STARTED),
       restore_type_(RestoreType::NONE),
       is_view_source_(false),
       bindings_(NavigationEntryImpl::kInvalidBindings),
       response_should_be_rendered_(true),
       associated_site_instance_type_(AssociatedSiteInstanceType::NONE),
       may_transfer_(may_transfer) {
   DCHECK(!browser_initiated || (entry != nullptr && frame_entry != nullptr));
+  TRACE_EVENT_ASYNC_BEGIN2("navigation", "NavigationRequest", this,
+                           "frame_tree_node",
+                           frame_tree_node_->frame_tree_node_id(), "url",
+                           common_params_.url.possibly_invalid_spec());
 
   // Sanitize the referrer.
   common_params_.referrer =
       Referrer::SanitizeForRequest(common_params_.url, common_params_.referrer);
 
   if (may_transfer) {
     FrameNavigationEntry* frame_entry = entry->GetFrameEntry(frame_tree_node);
     if (frame_entry) {
       source_site_instance_ = frame_entry->source_site_instance();
       dest_site_instance_ = frame_entry->site_instance();
@@ skipping 24 matching lines @@
   net::HttpRequestHeaders headers;
   headers.AddHeadersFromString(begin_params_.headers);
   AddAdditionalRequestHeaders(
       &headers, common_params_.url, common_params_.navigation_type,
       frame_tree_node_->navigator()->GetController()->GetBrowserContext(),
       common_params.method, user_agent_override, frame_tree_node);
   begin_params_.headers = headers.ToString();
 }
 
 NavigationRequest::~NavigationRequest() {
+  TRACE_EVENT_ASYNC_END0("navigation", "NavigationRequest", this);
 }
 
 void NavigationRequest::BeginNavigation() {
   DCHECK(!loader_);
   DCHECK(state_ == NOT_STARTED || state_ == WAITING_FOR_RENDERER_RESPONSE);
+  TRACE_EVENT_ASYNC_STEP_INTO0("navigation", "NavigationRequest", this,
+                               "BeginNavigation");
   state_ = STARTED;
   RenderFrameDevToolsAgentHost::OnBeforeNavigation(navigation_handle_.get());
 
   if (ShouldMakeNetworkRequestForURL(common_params_.url) &&
       !navigation_handle_->IsSameDocument()) {
     // It's safe to use base::Unretained because this NavigationRequest owns
     // the NavigationHandle where the callback will be stored.
     // TODO(clamy): pass the method to the NavigationHandle instead of a
     // boolean.
     bool is_external_protocol =
         !GetContentClient()->browser()->IsHandledURL(common_params_.url);
     navigation_handle_->WillStartRequest(
         common_params_.method, common_params_.post_data,
         Referrer::SanitizeForRequest(common_params_.url,
                                      common_params_.referrer),
         begin_params_.has_user_gesture, common_params_.transition,
         is_external_protocol, begin_params_.request_context_type,
         begin_params_.mixed_content_context_type,
         base::Bind(&NavigationRequest::OnStartChecksComplete,
                    base::Unretained(this)));
     return;
   }
 
   // There is no need to make a network request for this navigation, so commit
   // it immediately.
+  TRACE_EVENT_ASYNC_STEP_INTO0("navigation", "NavigationRequest", this,
+                               "ResponseStarted");
   state_ = RESPONSE_STARTED;
 
   // Select an appropriate RenderFrameHost.
   RenderFrameHostImpl* render_frame_host =
       frame_tree_node_->render_manager()->GetFrameHostForNavigation(*this);
   NavigatorImpl::CheckWebUIRendererDoesNotDisplayNormalURL(render_frame_host,
                                                            common_params_.url);
 
   // Inform the NavigationHandle that the navigation will commit.
   navigation_handle_->ReadyToCommitNavigation(render_frame_host);
@@ skipping 106 matching lines @@
     const scoped_refptr<ResourceResponse>& response,
     std::unique_ptr<StreamHandle> body,
     mojo::ScopedDataPipeConsumerHandle consumer_handle,
     const SSLStatus& ssl_status,
     std::unique_ptr<NavigationData> navigation_data,
     const GlobalRequestID& request_id,
     bool is_download,
     bool is_stream) {
   DCHECK(state_ == STARTED);
   DCHECK(response);
+  TRACE_EVENT_ASYNC_STEP_INTO0("navigation", "NavigationRequest", this,
+                               "OnResponseStarted");
   state_ = RESPONSE_STARTED;
 
   // Check if the response should be sent to a renderer.
   response_should_be_rendered_ =
       !is_download && (!response->head.headers.get() ||
                        (response->head.headers->response_code() != 204 &&
                         response->head.headers->response_code() != 205));
 
   // Response that will not commit should be marked as aborted in the
   // NavigationHandle.
@@ skipping 60 matching lines @@
       response->head.connection_info, ssl_status, request_id,
       common_params_.should_replace_current_entry, is_download, is_stream,
       base::Closure(),
       base::Bind(&NavigationRequest::OnWillProcessResponseChecksComplete,
                  base::Unretained(this)));
 }
 
 void NavigationRequest::OnRequestFailed(bool has_stale_copy_in_cache,
                                         int net_error) {
   DCHECK(state_ == STARTED || state_ == RESPONSE_STARTED);
+  TRACE_EVENT_ASYNC_STEP_INTO1("navigation", "NavigationRequest", this,
+                               "OnRequestFailed", "error", net_error);
   state_ = FAILED;
   navigation_handle_->set_net_error_code(static_cast<net::Error>(net_error));
 
   // With PlzNavigate, debug URLs will give a failed navigation because the
   // WebUI backend won't find a handler for them. They will be processed in the
   // renderer, however do not discard the pending entry so that the URL bar
   // shows them correctly.
   if (!IsRendererDebugURL(common_params_.url)) {
     frame_tree_node_->navigator()->DiscardPendingEntryIfNeeded(
         navigation_handle_.get());
@@ skipping 231 matching lines @@
   DCHECK_EQ(request_params_.has_user_gesture, begin_params_.has_user_gesture);
 
   render_frame_host->CommitNavigation(response_.get(), std::move(body_),
                                       std::move(handle_), common_params_,
                                       request_params_, is_view_source_);
 
   frame_tree_node_->ResetNavigationRequest(true, true);
 }
 
 }  // namespace content