base::Bind: Convert BrowsingDatabaseHelper::StartFetching.

chrome/browser/browsing_data_database_helper.h

Index: chrome/browser/browsing_data_database_helper.h
diff --git a/chrome/browser/browsing_data_database_helper.h b/chrome/browser/browsing_data_database_helper.h
index 62cc2d9f2809d0f0fc591b407bd4084a03530db7..2d3a8535cd36d2163e382ca9b537040f2d659092 100644
--- a/chrome/browser/browsing_data_database_helper.h
+++ b/chrome/browser/browsing_data_database_helper.h
@@ -10,6 +10,7 @@
 #include <string>
 
 #include "base/callback.h"
+#include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/synchronization/lock.h"
 #include "chrome/common/url_constants.h"
@@ -57,7 +58,7 @@ class BrowsingDataDatabaseHelper
   // callback.
   // This must be called only in the UI thread.
   virtual void StartFetching(
-      Callback1<const std::list<DatabaseInfo>& >::Type* callback);
+      const base::Callback<void(const std::list<DatabaseInfo>&)>& callback);
 
   // Cancels the notification callback (i.e., the window that created it no
   // longer exists).
@@ -80,8 +81,7 @@ class BrowsingDataDatabaseHelper
   std::list<DatabaseInfo> database_info_;
 
   // This only mutates on the UI thread.
-  scoped_ptr<Callback1<const std::list<DatabaseInfo>& >::Type >
-      completion_callback_;
+  base::Callback<void(const std::list<DatabaseInfo>&)> completion_callback_;
 
   // Indicates whether or not we're currently fetching information:
   // it's true when StartFetching() is called in the UI thread, and it's reset
@@ -126,10 +126,11 @@ class CannedBrowsingDataDatabaseHelper : public BrowsingDataDatabaseHelper {
   // True if no databases are currently stored.
   bool empty() const;
 
-  // BrowsingDataDatabaseHelper methods.
+  // BrowsingDataDatabaseHelper implementation.
   virtual void StartFetching(
-      Callback1<const std::list<DatabaseInfo>& >::Type* callback);
-  virtual void CancelNotification() {}
+      const base::Callback<void(const std::list<DatabaseInfo>&)>& callback)
+          OVERRIDE;
+  virtual void CancelNotification() OVERRIDE {}
 
  private:
   struct PendingDatabaseInfo {