Make WebUI objects not derive from WebUI. WebUI objects own the controller. This is the ownership...

chrome/browser/printing/print_preview_tab_controller.cc

Index: chrome/browser/printing/print_preview_tab_controller.cc
===================================================================
--- chrome/browser/printing/print_preview_tab_controller.cc	(revision 117871)
+++ chrome/browser/printing/print_preview_tab_controller.cc	(working copy)
@@ -260,9 +260,8 @@
 
   for (size_t i = 0; i < closed_preview_tabs.size(); ++i) {
     RemovePreviewTab(closed_preview_tabs[i]);
-    PrintPreviewUI* print_preview_ui =
-        static_cast<PrintPreviewUI*>(
-            closed_preview_tabs[i]->web_contents()->GetWebUI());
+    PrintPreviewUI* print_preview_ui = static_cast<PrintPreviewUI*>(
+        closed_preview_tabs[i]->web_contents()->GetWebUI()->GetController());
     if (print_preview_ui)
       print_preview_ui->OnPrintPreviewTabClosed();
   }
@@ -403,8 +402,8 @@
     TabContentsWrapper* preview_tab) {
   TabContentsWrapper* initiator_tab = GetInitiatorTab(preview_tab);
   if (initiator_tab && preview_tab->web_contents()->GetWebUI()) {
-    PrintPreviewUI* print_preview_ui =
-        static_cast<PrintPreviewUI*>(preview_tab->web_contents()->GetWebUI());
+    PrintPreviewUI* print_preview_ui = static_cast<PrintPreviewUI*>(
+        preview_tab->web_contents()->GetWebUI()->GetController());
     print_preview_ui->SetInitiatorTabURLAndTitle(
         initiator_tab->web_contents()->GetURL().spec(),
         initiator_tab->print_view_manager()->RenderSourceName());
@@ -467,8 +466,8 @@
     initiator_tab->print_view_manager()->PrintPreviewDone();
 
   // Initiator tab is closed. Close the print preview tab too.
-  PrintPreviewUI* print_preview_ui =
-      static_cast<PrintPreviewUI*>(preview_tab->web_contents()->GetWebUI());
+  PrintPreviewUI* print_preview_ui = static_cast<PrintPreviewUI*>(
+      preview_tab->web_contents()->GetWebUI()->GetController());
   if (print_preview_ui)
     print_preview_ui->OnInitiatorTabClosed();
 }
@@ -484,8 +483,8 @@
 
   // Print preview TabContents is destroyed. Notify |PrintPreviewUI| to abort
   // the initiator tab preview request.
-  PrintPreviewUI* print_preview_ui =
-      static_cast<PrintPreviewUI*>(preview_tab->web_contents()->GetWebUI());
+  PrintPreviewUI* print_preview_ui = static_cast<PrintPreviewUI*>(
+      preview_tab->web_contents()->GetWebUI()->GetController());
   if (print_preview_ui)
     print_preview_ui->OnTabDestroyed();