[DRAFT] Create RenderFrameHostManager.

content/browser/frame_host/navigation_controller_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/navigation_controller_impl.h"
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"  // Temporary
@@ skipping 706 matching lines @@
       break;
     default:
       NOTREACHED();
       break;
   };
 
   LoadEntry(entry);
 }
 
 bool NavigationControllerImpl::RendererDidNavigate(
+    RenderViewHost* rvh,
     const ViewHostMsg_FrameNavigate_Params& params,
     LoadCommittedDetails* details) {
   is_initial_navigation_ = false;
 
   // Save the previous state before we clobber it.
   if (GetLastCommittedEntry()) {
     details->previous_url = GetLastCommittedEntry()->GetURL();
     details->previous_entry_index = GetLastCommittedEntryIndex();
   } else {
     details->previous_url = GURL();
     details->previous_entry_index = -1;
   }
 
   // If we have a pending entry at this point, it should have a SiteInstance.
   // Restored entries start out with a null SiteInstance, but we should have
   // assigned one in NavigateToPendingEntry.
   DCHECK(pending_entry_index_ == -1 || pending_entry_->site_instance());
 
   // If we are doing a cross-site reload, we need to replace the existing
   // navigation entry, not add another entry to the history. This has the side
   // effect of removing forward browsing history, if such existed.
   // Or if we are doing a cross-site redirect navigation,
   // we will do a similar thing.
   details->did_replace_entry =
       pending_entry_ && pending_entry_->should_replace_entry();
 
   // Do navigation-type specific actions. These will make and commit an entry.
-  details->type = ClassifyNavigation(params);
+  details->type = ClassifyNavigation(rvh, params);
 
   // is_in_page must be computed before the entry gets committed.
   details->is_in_page = IsURLInPageNavigation(
       params.url, params.was_within_same_page, details->type);
 
   switch (details->type) {
     case NAVIGATION_TYPE_NEW_PAGE:
-      RendererDidNavigateToNewPage(params, details->did_replace_entry);
+      RendererDidNavigateToNewPage(rvh, params, details->did_replace_entry);
       break;
     case NAVIGATION_TYPE_EXISTING_PAGE:
-      RendererDidNavigateToExistingPage(params);
+      RendererDidNavigateToExistingPage(rvh, params);
       break;
     case NAVIGATION_TYPE_SAME_PAGE:
-      RendererDidNavigateToSamePage(params);
+      RendererDidNavigateToSamePage(rvh, params);
       break;
     case NAVIGATION_TYPE_IN_PAGE:
-      RendererDidNavigateInPage(params, &details->did_replace_entry);
+      RendererDidNavigateInPage(rvh, params, &details->did_replace_entry);
       break;
     case NAVIGATION_TYPE_NEW_SUBFRAME:
-      RendererDidNavigateNewSubframe(params);
+      RendererDidNavigateNewSubframe(rvh, params);
       break;
     case NAVIGATION_TYPE_AUTO_SUBFRAME:
-      if (!RendererDidNavigateAutoSubframe(params))
+      if (!RendererDidNavigateAutoSubframe(rvh, params))
         return false;
       break;
     case NAVIGATION_TYPE_NAV_IGNORE:
       // If a pending navigation was in progress, this canceled it.  We should
       // discard it and make sure it is removed from the URL bar.  After that,
       // there is nothing we can do with this navigation, so we just return to
       // the caller that nothing has happened.
       if (pending_entry_) {
         DiscardNonCommittedEntries();
         delegate_->NotifyNavigationStateChanged(INVALIDATE_TYPE_URL);
@@ skipping 24 matching lines @@
       NavigationEntryImpl::FromNavigationEntry(GetLastCommittedEntry());
   active_entry->SetTimestamp(timestamp);
   active_entry->SetHttpStatusCode(params.http_status_code);
   active_entry->SetPageState(params.page_state);
 
   // Once it is committed, we no longer need to track several pieces of state on
   // the entry.
   active_entry->ResetForCommit();
 
   // The active entry's SiteInstance should match our SiteInstance.
-  CHECK(active_entry->site_instance() == delegate_->GetSiteInstance());
+  // TODO(creis): This check won't pass for subframes until we create entries
+  // for subframe navigations.
+  if (PageTransitionIsMainFrame(params.transition))
+    CHECK(active_entry->site_instance() == rvh->GetSiteInstance());
 
   // Remember the bindings the renderer process has at this point, so that
   // we do not grant this entry additional bindings if we come back to it.
-  active_entry->SetBindings(
-      delegate_->GetRenderViewHost()->GetEnabledBindings());
+  active_entry->SetBindings(rvh->GetEnabledBindings());
 
   // Now prep the rest of the details for the notification and broadcast.
   details->entry = active_entry;
   details->is_main_frame =
       PageTransitionIsMainFrame(params.transition);
   details->serialized_security_info = params.security_info;
   details->http_status_code = params.http_status_code;
   NotifyNavigationEntryCommitted(details);
 
   return true;
 }
 
 NavigationType NavigationControllerImpl::ClassifyNavigation(
+    RenderViewHost* rvh,
     const ViewHostMsg_FrameNavigate_Params& params) const {
   if (params.page_id == -1) {
     // The renderer generates the page IDs, and so if it gives us the invalid
     // page ID (-1) we know it didn't actually navigate. This happens in a few
     // cases:
     //
     // - If a page makes a popup navigated to about blank, and then writes
     //   stuff like a subframe navigated to a real page. We'll get the commit
     //   for the subframe, but there won't be any commit for the outer page.
     //
     // - We were also getting these for failed loads (for example, bug 21849).
     //   The guess is that we get a "load commit" for the alternate error page,
     //   but that doesn't affect the page ID, so we get the "old" one, which
     //   could be invalid. This can also happen for a cross-site transition
     //   that causes us to swap processes. Then the error page load will be in
     //   a new process with no page IDs ever assigned (and hence a -1 value),
     //   yet the navigation controller still might have previous pages in its
     //   list.
     //
     // In these cases, there's nothing we can do with them, so ignore.
     return NAVIGATION_TYPE_NAV_IGNORE;
   }
 
-  if (params.page_id > delegate_->GetMaxPageID()) {
+  if (params.page_id > delegate_->GetMaxPageIDForSiteInstance(
+          rvh->GetSiteInstance())) {
     // Greater page IDs than we've ever seen before are new pages. We may or may
     // not have a pending entry for the page, and this may or may not be the
     // main frame.
     if (PageTransitionIsMainFrame(params.transition))
       return NAVIGATION_TYPE_NEW_PAGE;
 
     // When this is a new subframe navigation, we should have a committed page
     // for which it's a suframe in. This may not be the case when an iframe is
     // navigated on a popup navigated to about:blank (the iframe would be
     // written into the popup by script on the main page). For these cases,
     // there isn't any navigation stuff we can do, so just ignore it.
     if (!GetLastCommittedEntry())
       return NAVIGATION_TYPE_NAV_IGNORE;
 
     // Valid subframe navigation.
     return NAVIGATION_TYPE_NEW_SUBFRAME;
   }
 
   // We only clear the session history when navigating to a new page.
   DCHECK(!params.history_list_was_cleared);
 
   // Now we know that the notification is for an existing page. Find that entry.
   int existing_entry_index = GetEntryIndexWithPageID(
-      delegate_->GetSiteInstance(),
+      rvh->GetSiteInstance(),
       params.page_id);
   if (existing_entry_index == -1) {
     // The page was not found. It could have been pruned because of the limit on
     // back/forward entries (not likely since we'll usually tell it to navigate
     // to such entries). It could also mean that the renderer is smoking crack.
     NOTREACHED();
 
     // Because the unknown entry has committed, we risk showing the wrong URL in
     // release builds. Instead, we'll kill the renderer process to be safe.
     LOG(ERROR) << "terminating renderer for bad navigation: " << params.url;
@@ skipping 13 matching lines @@
       // Append entry metadata (e.g., 3_7x):
       //  3: page_id
       //  7: SiteInstance ID, or N for null
       //  x: appended if not from the current SiteInstance
       temp.append(base::IntToString(entries_[i]->GetPageID()));
       temp.append("_");
       if (entries_[i]->site_instance())
         temp.append(base::IntToString(entries_[i]->site_instance()->GetId()));
       else
         temp.append("N");
-      if (entries_[i]->site_instance() != delegate_->GetSiteInstance())
+      if (entries_[i]->site_instance() != rvh->GetSiteInstance())
         temp.append("x");
       temp.append(",");
     }
     GURL url(temp);
-    static_cast<RenderViewHostImpl*>(
-        delegate_->GetRenderViewHost())->Send(
-            new ViewMsg_TempCrashWithData(url));
+    static_cast<RenderViewHostImpl*>(rvh)->Send(
+        new ViewMsg_TempCrashWithData(url));
     return NAVIGATION_TYPE_NAV_IGNORE;
   }
   NavigationEntryImpl* existing_entry = entries_[existing_entry_index].get();
 
   if (!PageTransitionIsMainFrame(params.transition)) {
     // All manual subframes would get new IDs and were handled above, so we
     // know this is auto. Since the current page was found in the navigation
     // entry list, we're guaranteed to have a last committed entry.
     DCHECK(GetLastCommittedEntry());
     return NAVIGATION_TYPE_AUTO_SUBFRAME;
@@ skipping 25 matching lines @@
                               NAVIGATION_TYPE_UNKNOWN)) {
     return NAVIGATION_TYPE_IN_PAGE;
   }
 
   // Since we weeded out "new" navigations above, we know this is an existing
   // (back/forward) navigation.
   return NAVIGATION_TYPE_EXISTING_PAGE;
 }
 
 void NavigationControllerImpl::RendererDidNavigateToNewPage(
-    const ViewHostMsg_FrameNavigate_Params& params, bool replace_entry) {
+    RenderViewHost* rvh,
+    const ViewHostMsg_FrameNavigate_Params& params,
+    bool replace_entry) {
   NavigationEntryImpl* new_entry;
   bool update_virtual_url;
   // Only make a copy of the pending entry if it is appropriate for the new page
   // that was just loaded.  We verify this at a coarse grain by checking that
   // the SiteInstance hasn't been assigned to something else.
   if (pending_entry_ &&
       (!pending_entry_->site_instance() ||
-       pending_entry_->site_instance() == delegate_->GetSiteInstance())) {
+       pending_entry_->site_instance() == rvh->GetSiteInstance())) {
     new_entry = new NavigationEntryImpl(*pending_entry_);
 
     // Don't use the page type from the pending entry. Some interstitial page
     // may have set the type to interstitial. Once we commit, however, the page
     // type must always be normal.
     new_entry->set_page_type(PAGE_TYPE_NORMAL);
     update_virtual_url = new_entry->update_virtual_url_with_url();
   } else {
     new_entry = new NavigationEntryImpl;
 
@@ skipping 13 matching lines @@
     update_virtual_url = needs_update;
   }
 
   new_entry->SetURL(params.url);
   if (update_virtual_url)
     UpdateVirtualURLToURL(new_entry, params.url);
   new_entry->SetReferrer(params.referrer);
   new_entry->SetPageID(params.page_id);
   new_entry->SetTransitionType(params.transition);
   new_entry->set_site_instance(
-      static_cast<SiteInstanceImpl*>(delegate_->GetSiteInstance()));
+      static_cast<SiteInstanceImpl*>(rvh->GetSiteInstance()));
   new_entry->SetHasPostData(params.is_post);
   new_entry->SetPostID(params.post_id);
   new_entry->SetOriginalRequestURL(params.original_request_url);
   new_entry->SetIsOverridingUserAgent(params.is_overriding_user_agent);
 
   DCHECK(!params.history_list_was_cleared || !replace_entry);
   // The browser requested to clear the session history when it initiated the
   // navigation. Now we know that the renderer has updated its state accordingly
   // and it is safe to also clear the browser side history.
   if (params.history_list_was_cleared) {
     DiscardNonCommittedEntriesInternal();
     entries_.clear();
     last_committed_entry_index_ = -1;
   }
 
   InsertOrReplaceEntry(new_entry, replace_entry);
 }
 
 void NavigationControllerImpl::RendererDidNavigateToExistingPage(
+    RenderViewHost* rvh,
     const ViewHostMsg_FrameNavigate_Params& params) {
   // We should only get here for main frame navigations.
   DCHECK(PageTransitionIsMainFrame(params.transition));
 
   // This is a back/forward navigation. The existing page for the ID is
   // guaranteed to exist by ClassifyNavigation, and we just need to update it
   // with new information from the renderer.
-  int entry_index = GetEntryIndexWithPageID(delegate_->GetSiteInstance(),
+  int entry_index = GetEntryIndexWithPageID(rvh->GetSiteInstance(),
                                             params.page_id);
   DCHECK(entry_index >= 0 &&
          entry_index < static_cast<int>(entries_.size()));
   NavigationEntryImpl* entry = entries_[entry_index].get();
 
   // The URL may have changed due to redirects.
   entry->SetURL(params.url);
   if (entry->update_virtual_url_with_url())
     UpdateVirtualURLToURL(entry, params.url);
 
   // The redirected to page should not inherit the favicon from the previous
   // page.
   if (PageTransitionIsRedirect(params.transition))
     entry->GetFavicon() = FaviconStatus();
 
   // The site instance will normally be the same except during session restore,
   // when no site instance will be assigned.
   DCHECK(entry->site_instance() == NULL ||
-         entry->site_instance() == delegate_->GetSiteInstance());
+         entry->site_instance() == rvh->GetSiteInstance());
   entry->set_site_instance(
-      static_cast<SiteInstanceImpl*>(delegate_->GetSiteInstance()));
+      static_cast<SiteInstanceImpl*>(rvh->GetSiteInstance()));
 
   entry->SetHasPostData(params.is_post);
   entry->SetPostID(params.post_id);
 
   // The entry we found in the list might be pending if the user hit
   // back/forward/reload. This load should commit it (since it's already in the
   // list, we can just discard the pending pointer).  We should also discard the
   // pending entry if it corresponds to a different navigation, since that one
   // is now likely canceled.  If it is not canceled, we will treat it as a new
   // navigation when it arrives, which is also ok.
   //
   // Note that we need to use the "internal" version since we don't want to
   // actually change any other state, just kill the pointer.
   DiscardNonCommittedEntriesInternal();
 
   // If a transient entry was removed, the indices might have changed, so we
   // have to query the entry index again.
   last_committed_entry_index_ =
-      GetEntryIndexWithPageID(delegate_->GetSiteInstance(), params.page_id);
+      GetEntryIndexWithPageID(rvh->GetSiteInstance(), params.page_id);
 }
 
 void NavigationControllerImpl::RendererDidNavigateToSamePage(
+    RenderViewHost* rvh,
     const ViewHostMsg_FrameNavigate_Params& params) {
   // This mode implies we have a pending entry that's the same as an existing
   // entry for this page ID. This entry is guaranteed to exist by
   // ClassifyNavigation. All we need to do is update the existing entry.
   NavigationEntryImpl* existing_entry = GetEntryWithPageID(
-      delegate_->GetSiteInstance(), params.page_id);
+      rvh->GetSiteInstance(), params.page_id);
 
   // We assign the entry's unique ID to be that of the new one. Since this is
   // always the result of a user action, we want to dismiss infobars, etc. like
   // a regular user-initiated navigation.
   existing_entry->set_unique_id(pending_entry_->GetUniqueID());
 
   // The URL may have changed due to redirects.
   if (existing_entry->update_virtual_url_with_url())
     UpdateVirtualURLToURL(existing_entry, params.url);
   existing_entry->SetURL(params.url);
 
   // The page may have been requested with a different HTTP method.
   existing_entry->SetHasPostData(params.is_post);
   existing_entry->SetPostID(params.post_id);
 
   DiscardNonCommittedEntries();
 }
 
 void NavigationControllerImpl::RendererDidNavigateInPage(
-    const ViewHostMsg_FrameNavigate_Params& params, bool* did_replace_entry) {
+    RenderViewHost* rvh,
+    const ViewHostMsg_FrameNavigate_Params& params,
+    bool* did_replace_entry) {
   DCHECK(PageTransitionIsMainFrame(params.transition)) <<
       "WebKit should only tell us about in-page navs for the main frame.";
   // We're guaranteed to have an entry for this one.
   NavigationEntryImpl* existing_entry = GetEntryWithPageID(
-      delegate_->GetSiteInstance(), params.page_id);
+      rvh->GetSiteInstance(), params.page_id);
 
   // Reference fragment navigation. We're guaranteed to have the last_committed
   // entry and it will be the same page as the new navigation (minus the
   // reference fragments, of course).  We'll update the URL of the existing
   // entry without pruning the forward history.
   existing_entry->SetURL(params.url);
   if (existing_entry->update_virtual_url_with_url())
     UpdateVirtualURLToURL(existing_entry, params.url);
 
   // This replaces the existing entry since the page ID didn't change.
   *did_replace_entry = true;
 
   DiscardNonCommittedEntriesInternal();
 
   // If a transient entry was removed, the indices might have changed, so we
   // have to query the entry index again.
   last_committed_entry_index_ =
-      GetEntryIndexWithPageID(delegate_->GetSiteInstance(), params.page_id);
+      GetEntryIndexWithPageID(rvh->GetSiteInstance(), params.page_id);
 }
 
 void NavigationControllerImpl::RendererDidNavigateNewSubframe(
+    RenderViewHost* rvh,
     const ViewHostMsg_FrameNavigate_Params& params) {
   if (PageTransitionCoreTypeIs(params.transition,
                                PAGE_TRANSITION_AUTO_SUBFRAME)) {
     // This is not user-initiated. Ignore.
     DiscardNonCommittedEntriesInternal();
     return;
   }
 
   // Manual subframe navigations just get the current entry cloned so the user
   // can go back or forward to it. The actual subframe information will be
   // stored in the page state for each of those entries. This happens out of
   // band with the actual navigations.
   DCHECK(GetLastCommittedEntry()) << "ClassifyNavigation should guarantee "
                                   << "that a last committed entry exists.";
   NavigationEntryImpl* new_entry = new NavigationEntryImpl(
       *NavigationEntryImpl::FromNavigationEntry(GetLastCommittedEntry()));
   new_entry->SetPageID(params.page_id);
   InsertOrReplaceEntry(new_entry, false);
 }
 
 bool NavigationControllerImpl::RendererDidNavigateAutoSubframe(
+    RenderViewHost* rvh,
     const ViewHostMsg_FrameNavigate_Params& params) {
   // We're guaranteed to have a previously committed entry, and we now need to
   // handle navigation inside of a subframe in it without creating a new entry.
   DCHECK(GetLastCommittedEntry());
 
   // Handle the case where we're navigating back/forward to a previous subframe
   // navigation entry. This is case "2." in NAV_AUTO_SUBFRAME comment in the
   // header file. In case "1." this will be a NOP.
   int entry_index = GetEntryIndexWithPageID(
-      delegate_->GetSiteInstance(),
+      rvh->GetSiteInstance(),
       params.page_id);
   if (entry_index < 0 ||
       entry_index >= static_cast<int>(entries_.size())) {
     NOTREACHED();
     return false;
   }
 
   // Update the current navigation entry in case we're going back/forward.
   if (entry_index != last_committed_entry_index_) {
     last_committed_entry_index_ = entry_index;
@@ skipping 518 matching lines @@
     }
   }
 }
 
 void NavigationControllerImpl::SetGetTimestampCallbackForTest(
     const base::Callback<base::Time()>& get_timestamp_callback) {
   get_timestamp_callback_ = get_timestamp_callback;
 }
 
 }  // namespace content