Revert 85504 - Move download stuff to download tab helper.

content/browser/tab_contents/tab_contents.cc

Index: content/browser/tab_contents/tab_contents.cc
===================================================================
--- content/browser/tab_contents/tab_contents.cc	(revision 85514)
+++ content/browser/tab_contents/tab_contents.cc	(working copy)
@@ -13,9 +13,11 @@
 #include "base/string_util.h"
 #include "base/time.h"
 #include "base/utf_string_conversions.h"
+#include "chrome/browser/browser_process.h"
 #include "chrome/browser/browser_shutdown.h"
 #include "chrome/browser/debugger/devtools_manager.h"
 #include "chrome/browser/defaults.h"
+#include "chrome/browser/download/download_request_limiter.h"
 #include "chrome/browser/external_protocol_handler.h"
 #include "chrome/browser/history/history.h"
 #include "chrome/browser/load_from_memory_cache_details.h"
@@ -854,6 +856,26 @@
       false : render_manager_.web_ui()->force_bookmark_bar_visible();
 }
 
+bool TabContents::CanDownload(int request_id) {
+  TabContentsDelegate* d = delegate();
+  if (d)
+    return d->CanDownload(request_id);
+  return true;
+}
+
+void TabContents::OnStartDownload(DownloadItem* download) {
+  DCHECK(download);
+
+  if (!delegate())
+    return;
+
+  // Download in a constrained popup is shown in the tab that opened it.
+  TabContents* tab_contents = delegate()->GetConstrainingContents(this);
+
+  if (tab_contents && tab_contents->delegate())
+    tab_contents->delegate()->OnStartDownload(download, this);
+}
+
 void TabContents::WillClose(ConstrainedWindow* window) {
   ConstrainedWindowList::iterator i(
       std::find(child_windows_.begin(), child_windows_.end(), window));
@@ -1932,8 +1954,11 @@
 }
 
 void TabContents::OnUserGesture() {
-  // Notify observers.
-  FOR_EACH_OBSERVER(TabContentsObserver, observers_, DidGetUserGesture());
+  // See comment in RenderViewHostDelegate::OnUserGesture as to why we do this.
+  DownloadRequestLimiter* limiter =
+      g_browser_process->download_request_limiter();
+  if (limiter)
+    limiter->OnUserGesture(this);
   ExternalProtocolHandler::PermitLaunchUrl();
 }