Added a link to the downloads tab that opens the downloads folder.

chrome/browser/ui/webui/downloads_dom_handler.cc

Index: chrome/browser/ui/webui/downloads_dom_handler.cc
diff --git a/chrome/browser/ui/webui/downloads_dom_handler.cc b/chrome/browser/ui/webui/downloads_dom_handler.cc
index f5e7929ce49d63f00a34573c4dad7fb57e61c438..742a051d5ed50b0ca724f4093661aaba902faa69 100644
--- a/chrome/browser/ui/webui/downloads_dom_handler.cc
+++ b/chrome/browser/ui/webui/downloads_dom_handler.cc
@@ -18,11 +18,14 @@
 #include "chrome/browser/download/download_history.h"
 #include "chrome/browser/download/download_item.h"
 #include "chrome/browser/download/download_util.h"
+#include "chrome/browser/platform_util.h"
+#include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/webui/chrome_url_data_manager.h"
 #include "chrome/browser/ui/webui/fileicon_source.h"
 #include "chrome/browser/ui/webui/fileicon_source_cros.h"
 #include "chrome/common/jstemplate_builder.h"
+#include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "content/browser/browser_thread.h"
 #include "content/browser/tab_contents/tab_contents.h"
@@ -97,6 +100,8 @@ void DownloadsDOMHandler::RegisterMessages() {
       NewCallback(this, &DownloadsDOMHandler::HandleCancel));
   web_ui_->RegisterMessageCallback("clearAll",
       NewCallback(this, &DownloadsDOMHandler::HandleClearAll));
+  web_ui_->RegisterMessageCallback("openDownloadsFolder",
+      NewCallback(this, &DownloadsDOMHandler::HandleOpenDownloadsFolder));
 }
 
 void DownloadsDOMHandler::OnDownloadUpdated(DownloadItem* download) {
@@ -227,6 +232,12 @@ void DownloadsDOMHandler::HandleClearAll(const ListValue* args) {
   download_manager_->RemoveAllDownloads();
 }
 
+void DownloadsDOMHandler::HandleOpenDownloadsFolder(const ListValue* args) {
+  PrefService* pref_service = web_ui_->GetProfile()->GetPrefs();

[benjhayden, 2011/07/18 19:07:54]

Would you mind using download_manager_->download_prefs()->download_path()
instead?

+  platform_util::OpenItem(

[asanka, 2011/07/18 17:18:48]

This runs in the UI thread.  While OpenItem() is safe to call (and must be
called from) the UI thread on Mac, on other platforms it should be called from
the FILE thread.

+      pref_service->GetFilePath(prefs::kDownloadDefaultDirectory));
+}
+
 // DownloadsDOMHandler, private: ----------------------------------------------
 
 void DownloadsDOMHandler::SendCurrentDownloads() {