Fix warning prompting on closing a window that will cancel downloads.

chrome/browser/ui/browser.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_BROWSER_UI_BROWSER_H_
 #define CHROME_BROWSER_UI_BROWSER_H_
 #pragma once
 
 #include <map>
 #include <set>
@@ skipping 94 matching lines @@
     // what the user has done.
     MAXIMIZED_STATE_DEFAULT,
 
     // Maximized state is explicitly maximized.
     MAXIMIZED_STATE_MAXIMIZED,
 
     // Maximized state is explicitly not maximized (normal).
     MAXIMIZED_STATE_UNMAXIMIZED
   };
 
+  // The context for a download blocked notification from
+  // OkToCloseWithInProgressDownloads.
+  enum DownloadClosePreventionType {
+    // Browser close is not blocked by download state.
+    DOWNLOAD_CLOSE_OK,
+
+    // The browser is shutting down and there are active downloads
+    // that would be cancelled.
+    DOWNLOAD_CLOSE_BROWSER_SHUTDOWN,
+
+    // There are active downloads associated with this incognito profile
+    // that would be canceled.
+    DOWNLOAD_CLOSE_LAST_WINDOW_IN_INCOGNITO_PROFILE,
+  };
+
   struct CreateParams {
     CreateParams(Type type, Profile* profile);
 
     // The browser type.
     Type type;
 
     // The associated profile.
     Profile* profile;
 
     // The application name that is also the name of the window to the shell.
@@ skipping 210 matching lines @@
   // cleanup.
   void OnWindowClosing();
 
   // OnWindowActivationChanged handling ///////////////////////////////////////
 
   // Invoked when the window containing us is activated.
   void OnWindowActivated();
 
   // In-progress download termination handling /////////////////////////////////
 
-  // Are normal and/or incognito downloads in progress?
-  void CheckDownloadsInProgress(bool* normal_downloads,
-                                bool* incognito_downloads);
-
   // Called when the user has decided whether to proceed or not with the browser
   // closure.  |cancel_downloads| is true if the downloads should be canceled
   // and the browser closed, false if the browser should stay open and the
   // downloads running.
   void InProgressDownloadResponse(bool cancel_downloads);
 
+  // Indicates whether or not this browser window can be closed, or
+  // would be blocked by in-progress downloads.
+  // If executing downloads would be cancelled by this window close,
+  // then |*num_downloads_blocking| is updated with how many downloads
+  // would be canceled if the close continued.
+  DownloadClosePreventionType OkToCloseWithInProgressDownloads(
+      int* num_downloads_blocking) const;
+
   // TabStripModel pass-thrus /////////////////////////////////////////////////
 
   TabStripModel* tabstrip_model() const {
     // TODO(beng): remove this accessor. It violates google style.
     return tab_handler_->GetTabStripModel();
   }
 
   int tab_count() const;
   int active_index() const;
   int GetIndexOfController(const NavigationController* controller) const;
@@ skipping 897 matching lines @@
 
   scoped_ptr<InstantController> instant_;
   scoped_ptr<InstantUnloadHandler> instant_unload_handler_;
 
   BookmarkBar::State bookmark_bar_state_;
 
   DISALLOW_COPY_AND_ASSIGN(Browser);
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_H_