Move download stuff from download helper back to TabContents. This is basically a revert of r8576...

chrome/browser/ui/browser.h

Index: chrome/browser/ui/browser.h
===================================================================
--- chrome/browser/ui/browser.h	(revision 92629)
+++ chrome/browser/ui/browser.h	(working copy)
@@ -31,7 +31,6 @@
 #include "chrome/browser/ui/bookmarks/bookmark_bar.h"
 #include "chrome/browser/ui/bookmarks/bookmark_tab_helper_delegate.h"
 #include "chrome/browser/ui/browser_navigator.h"
-#include "chrome/browser/ui/download/download_tab_helper_delegate.h"
 #include "chrome/browser/ui/search_engines/search_engine_tab_helper_delegate.h"
 #include "chrome/browser/ui/shell_dialogs.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper_delegate.h"
@@ -70,7 +69,6 @@
                 public SearchEngineTabHelperDelegate,
                 public BlockedContentTabHelperDelegate,
                 public BookmarkTabHelperDelegate,
-                public DownloadTabHelperDelegate,
                 public PageNavigator,
                 public CommandUpdater::CommandUpdaterDelegate,
                 public NotificationObserver,
@@ -852,6 +850,8 @@
   virtual void SetFocusToLocationBar(bool select_all) OVERRIDE;
   virtual void RenderWidgetShowing() OVERRIDE;
   virtual int GetExtraRenderViewHeight() const OVERRIDE;
+  virtual void OnStartDownload(TabContents* source,
+                               DownloadItem* download) OVERRIDE;
   virtual void ShowPageInfo(Profile* profile,
                             const GURL& url,
                             const NavigationEntry::SSLStatus& ssl,
@@ -906,12 +906,6 @@
   virtual void URLStarredChanged(TabContentsWrapper* source,
                                  bool starred) OVERRIDE;
 
-  // Overridden from DownloadTabHelperDelegate:
-  virtual bool CanDownload(int request_id) OVERRIDE;
-  virtual void OnStartDownload(DownloadItem* download,
-                               TabContentsWrapper* tab) OVERRIDE;
-
-
   // Overridden from SelectFileDialog::Listener:
   virtual void FileSelected(const FilePath& path, int index, void* params);