Added dangerous download prompting.

chrome/browser/views/download_tab_view.h

Index: chrome/browser/views/download_tab_view.h
===================================================================
--- chrome/browser/views/download_tab_view.h	(revision 2758)
+++ chrome/browser/views/download_tab_view.h	(working copy)
@@ -25,7 +25,8 @@
 }
 
 class DownloadItemTabView : public ChromeViews::View,
-                            public ChromeViews::LinkController {
+                            public ChromeViews::LinkController,
+                            public ChromeViews::NativeButton::Listener {
  public:
   DownloadItemTabView();
   virtual ~DownloadItemTabView();
@@ -44,10 +45,14 @@
   void LayoutComplete();
   void LayoutCancelled();
   void LayoutInProgress();
+  void LayoutPromptDangerousDownload();
 
   // LinkController overrides
   virtual void LinkActivated(ChromeViews::Link* source, int event_flags);
 
+  // NativeButton Listener overrides.
+  virtual void ButtonPressed(ChromeViews::NativeButton* sender);
+
   // Used to set our model temporarily during layout and paint operations
   void SetModel(DownloadItem* model, DownloadTabView* parent);
 
@@ -58,6 +63,9 @@
   // Containing view.
   DownloadTabView* parent_;
 
+  // Whether we are the renderer for floating views.
+  bool is_floating_view_renderer_;
+
   // Time display.
   ChromeViews::Label* since_;
   ChromeViews::Label* date_;
@@ -72,11 +80,19 @@
   ChromeViews::Label* time_remaining_;
   ChromeViews::Label* download_progress_;
 
+  // The message warning of a dangerous download.
+  ChromeViews::Label* dangerous_download_warning_;
+
   // Actions that can be initiated.
   ChromeViews::Link* pause_;
   ChromeViews::Link* cancel_;
   ChromeViews::Link* show_;
 
+  // The buttons used to prompt the user when a dangerous download has been
+  // initiated.
+  ChromeViews::NativeButton* save_button_;
+  ChromeViews::NativeButton* discard_button_;
+
   DISALLOW_EVIL_CONSTRUCTORS(DownloadItemTabView);
 };
 
@@ -154,10 +170,14 @@
   // Initiates an asynchronous icon extraction.
   void LoadIcon(DownloadItem* download);
 
-  // Clears the list of "in progress" downloads and removes the this
-  // DownloadTabView from their observer list.
+  // Clears the list of "in progress" downloads and removes this DownloadTabView
+  // from their observer list.
   void ClearDownloadInProgress();
 
+  // Clears the list of dangerous downloads and removes this DownloadTabView
+  // from their observer list.
+  void ClearDangerousDownloads();
+
   // Our model
   DownloadManager* model_;
 
@@ -178,6 +198,10 @@
   // does not own the DownloadItems.
   base::hash_set<DownloadItem*> in_progress_;
 
+  // Keeps track of the downloads we are an observer for as a consequence of
+  // being a dangerous download.
+  base::hash_set<DownloadItem*> dangerous_downloads_;
+
   // Provide a start position for downloads with no known size.
   int start_angle_;