Revert 149794 - DownloadItem::Observer::OnDownloadDestroyed() replaces DownloadItem::REMOVING

chrome/browser/plugin_installer.cc

Index: chrome/browser/plugin_installer.cc
===================================================================
--- chrome/browser/plugin_installer.cc	(revision 150095)
+++ chrome/browser/plugin_installer.cc	(working copy)
@@ -150,6 +150,11 @@
       DownloadCancelled();
       break;
     }
+    case DownloadItem::REMOVING: {
+      DCHECK_EQ(INSTALLER_STATE_DOWNLOADING, state_);
+      state_ = INSTALLER_STATE_IDLE;
+      break;
+    }
     case DownloadItem::INTERRUPTED: {
       content::DownloadInterruptReason reason = download->GetLastReason();
       DownloadError(content::InterruptReasonDebugString(reason));
@@ -163,10 +168,7 @@
   download->RemoveObserver(this);
 }
 
-void PluginInstaller::OnDownloadDestroyed(DownloadItem* download) {
-  DCHECK_EQ(INSTALLER_STATE_DOWNLOADING, state_);
-  state_ = INSTALLER_STATE_IDLE;
-  download->RemoveObserver(this);
+void PluginInstaller::OnDownloadOpened(DownloadItem* download) {
 }
 
 void PluginInstaller::AddObserver(PluginInstallerObserver* observer) {