PlzNavigate: implement RequestNavigation in the no live renderer case

content/browser/frame_host/navigator_impl.cc

 // Copyright 2013 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/navigator_impl.h"
 
 #include "base/command_line.h"
 #include "base/time/time.h"
 #include "content/browser/frame_host/frame_tree.h"
 #include "content/browser/frame_host/frame_tree_node.h"
@@ skipping 18 matching lines @@
 #include "content/public/common/bindings_policy.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/url_constants.h"
 #include "content/public/common/url_utils.h"
 
 namespace content {
 
 namespace {
 
-FrameMsg_Navigate_Type::Value GetNavigationType(
-    BrowserContext* browser_context, const NavigationEntryImpl& entry,
-    NavigationController::ReloadType reload_type) {
-  switch (reload_type) {
-    case NavigationControllerImpl::RELOAD:
-      return FrameMsg_Navigate_Type::RELOAD;
-    case NavigationControllerImpl::RELOAD_IGNORING_CACHE:
-      return FrameMsg_Navigate_Type::RELOAD_IGNORING_CACHE;
-    case NavigationControllerImpl::RELOAD_ORIGINAL_REQUEST_URL:
-      return FrameMsg_Navigate_Type::RELOAD_ORIGINAL_REQUEST_URL;
-    case NavigationControllerImpl::NO_RELOAD:
-      break;  // Fall through to rest of function.
-  }
-
-  // |RenderViewImpl::PopulateStateFromPendingNavigationParams| differentiates
-  // between |RESTORE_WITH_POST| and |RESTORE|.
-  if (entry.restore_type() ==
-      NavigationEntryImpl::RESTORE_LAST_SESSION_EXITED_CLEANLY) {
-    if (entry.GetHasPostData())
-      return FrameMsg_Navigate_Type::RESTORE_WITH_POST;
-    return FrameMsg_Navigate_Type::RESTORE;
-  }
-
-  return FrameMsg_Navigate_Type::NORMAL;
-}
-
-void MakeNavigateParams(const NavigationEntryImpl& entry,
-                        const NavigationControllerImpl& controller,
-                        NavigationController::ReloadType reload_type,
-                        base::TimeTicks navigation_start,
-                        FrameMsg_Navigate_Params* params) {
-  params->page_id = entry.GetPageID();
-  params->should_clear_history_list = entry.should_clear_history_list();
-  params->should_replace_current_entry = entry.should_replace_entry();
-  if (entry.should_clear_history_list()) {
-    // Set the history list related parameters to the same values a
-    // NavigationController would return before its first navigation. This will
-    // fully clear the RenderView's view of the session history.
-    params->pending_history_list_offset = -1;
-    params->current_history_list_offset = -1;
-    params->current_history_list_length = 0;
-  } else {
-    params->pending_history_list_offset = controller.GetIndexOfEntry(&entry);
-    params->current_history_list_offset =
-        controller.GetLastCommittedEntryIndex();
-    params->current_history_list_length = controller.GetEntryCount();
-  }
-  params->url = entry.GetURL();
-  if (!entry.GetBaseURLForDataURL().is_empty()) {
-    params->base_url_for_data_url = entry.GetBaseURLForDataURL();
-    params->history_url_for_data_url = entry.GetVirtualURL();
-  }
-  params->referrer = entry.GetReferrer();
-  params->transition = entry.GetTransitionType();
-  params->page_state = entry.GetPageState();
-  params->navigation_type =
-      GetNavigationType(controller.GetBrowserContext(), entry, reload_type);
-  // This is used by the old performance infrastructure to set up DocumentState
-  // associated with the RenderView.
-  // TODO(ppi): make it go away.
-  params->request_time = base::Time::Now();
-  params->extra_headers = entry.extra_headers();
-  params->transferred_request_child_id =
-      entry.transferred_global_request_id().child_id;
-  params->transferred_request_request_id =
-      entry.transferred_global_request_id().request_id;
-  params->is_overriding_user_agent = entry.GetIsOverridingUserAgent();
-  // Avoid downloading when in view-source mode.
-  params->allow_download = !entry.IsViewSourceMode();
-  params->is_post = entry.GetHasPostData();
-  if (entry.GetBrowserInitiatedPostData()) {
-    params->browser_initiated_post_data.assign(
-        entry.GetBrowserInitiatedPostData()->front(),
-        entry.GetBrowserInitiatedPostData()->front() +
-            entry.GetBrowserInitiatedPostData()->size());
-  }
-
-  // Set the redirect chain to the navigation's redirects, unless we are
-  // returning to a completed navigation (whose previous redirects don't apply).
-  if (PageTransitionIsNewNavigation(params->transition)) {
-    params->redirects = entry.GetRedirectChain();
-  } else {
-    params->redirects.clear();
-  }
-
-  params->can_load_local_resources = entry.GetCanLoadLocalResources();
-  params->frame_to_navigate = entry.GetFrameToNavigate();
-  params->browser_navigation_start = navigation_start;
-}
-
 RenderFrameHostManager* GetRenderManager(RenderFrameHostImpl* rfh) {
   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kSitePerProcess))
     return rfh->frame_tree_node()->render_manager();
 
   return rfh->frame_tree_node()->frame_tree()->root()->render_manager();
 }
 
 }  // namespace
 
-
 NavigatorImpl::NavigatorImpl(
     NavigationControllerImpl* navigation_controller,
     NavigatorDelegate* delegate)
     : controller_(navigation_controller),
       delegate_(delegate) {
 }
 
 NavigationController* NavigatorImpl::GetController() {
   return controller_;
 }
@@ skipping 178 matching lines @@
                  << " characters.";
     return false;
   }
 
   // This will be used to set the Navigation Timing API navigationStart
   // parameter for browser navigations in new tabs (intents, tabs opened through
   // "Open link in new tab"). We need to keep it above RFHM::Navigate() call to
   // capture the time needed for the RenderFrameHost initialization.
   base::TimeTicks navigation_start = base::TimeTicks::Now();
 
+  // WebContents uses this to fill LoadNotificationDetails when the load
+  // completes, so that PerformanceMonitor that listens to the notification can
+  // record the load time. PerformanceMonitor is no longer maintained.
+  // TODO(ppi): make this go away.
+  current_load_start_ = base::TimeTicks::Now();
+
+  // Create the navigation parameters that may be used directly by the
+  // RenderFrameHostManager in browser initiated navigation (part of project
+  // PlzNavigate navigation refactoring).
+  FrameMsg_Navigate_Params navigate_params;
+  entry.MakeNavigateParams(
+      *controller_, reload_type, navigation_start, &navigate_params);
+
   RenderFrameHostManager* manager =
       render_frame_host->frame_tree_node()->render_manager();
+
+  // As part of the PlzNavigate project, the RenderFrameHosts are no longer
+  // asked to navigate. Instead the RenderFrameHostManager handles the
+  // navigation requests for that frame node.
+#if defined(USE_PLZ_NAVIGATE)

[clamy, 2014/07/16 12:13:49]

Do you think it is better to use a runtime flag instead of a compile time flag
in that case?

[ppi, 2014/07/16 14:28:09]

I'm curious to hear Nasko's opinion, personally I do. For instance, there is a
typo in "navigate_params" below that would have been caught if this was a
runtime flag ;).

+  return manager->RequestNavigation(entry, navigaet_params);
+#endif
+
   RenderFrameHostImpl* dest_render_frame_host = manager->Navigate(entry);
   if (!dest_render_frame_host)
     return false;  // Unable to create the desired RenderFrameHost.
 
   // Make sure no code called via RFHM::Navigate clears the pending entry.
   CHECK_EQ(controller_->GetPendingEntry(), &entry);
 
   // For security, we should never send non-Web-UI URLs to a Web UI renderer.
   // Double check that here.
   int enabled_bindings =
       dest_render_frame_host->render_view_host()->GetEnabledBindings();
   bool is_allowed_in_web_ui_renderer =
       WebUIControllerFactoryRegistry::GetInstance()->IsURLAcceptableForWebUI(
           controller_->GetBrowserContext(), entry.GetURL());
   if ((enabled_bindings & BINDINGS_POLICY_WEB_UI) &&
       !is_allowed_in_web_ui_renderer) {
     // Log the URL to help us diagnose any future failures of this CHECK.
     GetContentClient()->SetActiveURL(entry.GetURL());
     CHECK(0);
   }
 
   // Notify observers that we will navigate in this RenderFrame.
   if (delegate_)
     delegate_->AboutToNavigateRenderFrame(dest_render_frame_host);
 
-  // WebContents uses this to fill LoadNotificationDetails when the load
-  // completes, so that PerformanceMonitor that listens to the notification can
-  // record the load time. PerformanceMonitor is no longer maintained.
-  // TODO(ppi): make this go away.
-  current_load_start_ = base::TimeTicks::Now();
-
   // Navigate in the desired RenderFrameHost.
-  FrameMsg_Navigate_Params navigate_params;
-  MakeNavigateParams(entry, *controller_, reload_type, navigation_start,
-      &navigate_params);
   dest_render_frame_host->Navigate(navigate_params);
 
   // Make sure no code called via RFH::Navigate clears the pending entry.
   CHECK_EQ(controller_->GetPendingEntry(), &entry);
 
   if (entry.GetPageID() == -1) {
     // HACK!!  This code suppresses javascript: URLs from being added to
     // session history, which is what we want to do for javascript: URLs that
     // do not generate content.  What we really need is a message from the
     // renderer telling us that a new page was not created.  The same message
@@ skipping 258 matching lines @@
 
     // Navigations in Web UI pages count as browser-initiated navigations.
     params.is_renderer_initiated = false;
   }
 
   if (delegate_)
     delegate_->RequestOpenURL(render_frame_host, params);
 }
 
 }  // namespace content