Fixes crash in ClearBrowsingDataView that can only occur during the

automated tests. If the window is closed while a removal is in
progress the BrowsingDataRemover would be left with a reference to a
deleted object. This can only happen during automated testing as
while clearing is in progress we don't allow the user to close the
dialog.

BUG=1138705
TEST=covered by automated test bot


git-svn-id: svn://svn.chromium.org/chrome/trunk/src@1512 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 19 insertions, 6 deletions

diff --git a/chrome/browser/views/clear_browsing_data.cc b/chrome/browser/views/clear_browsing_data.cc
index 2fa8589..c8e3ea6 100644
--- a/chrome/browser/views/clear_browsing_data.cc
+++ b/chrome/browser/views/clear_browsing_data.cc
@@ -37,12 +37,19 @@ ClearBrowsingDataView::ClearBrowsingDataView(Profile* profile)
       time_period_label_(NULL),
       time_period_combobox_(NULL),
       delete_in_progress_(false),
-      profile_(profile) {
+      profile_(profile),
+      remover_(NULL) {
   DCHECK(profile);
   Init();
 }
 
 ClearBrowsingDataView::~ClearBrowsingDataView(void) {
+  if (remover_) {
+    // We were destroyed while clearing history was in progress. This can only
+    // occur during automated tests (normally the user can't close the dialog
+    // while clearing is in progress as the dialog is modal and not closeable).
+    remover_->RemoveObserver(this);
+  }
 }
 
 void ClearBrowsingDataView::Init() {
@@ -263,7 +270,7 @@ bool ClearBrowsingDataView::Accept() {
   }
 
   OnDelete();
-  return false;  // We close the dialog in OnDeletionDone().
+  return false;  // We close the dialog in OnBrowsingDataRemoverDone().
 }
 
 ChromeViews::View* ClearBrowsingDataView::GetContentsView() {
@@ -370,13 +377,16 @@ void ClearBrowsingDataView::OnDelete() {
   UpdateControlEnabledState();
 
   // BrowsingDataRemover deletes itself when done.
-  BrowsingDataRemover* remover =
+  remover_ =
       new BrowsingDataRemover(profile_, delete_begin, Time());
-  remover->AddObserver(this);
-  remover->Remove(remove_mask);
+  remover_->AddObserver(this);
+  remover_->Remove(remove_mask);
 }
 
 void ClearBrowsingDataView::OnBrowsingDataRemoverDone() {
+  // No need to remove ourselves as an observer as BrowsingDataRemover deletes
+  // itself after we return.
+  remover_ = NULL;
   window()->Close();
 }
 
diff --git a/chrome/browser/views/clear_browsing_data.h b/chrome/browser/views/clear_browsing_data.h
index 56b063b..2b057a5 100644
--- a/chrome/browser/views/clear_browsing_data.h
+++ b/chrome/browser/views/clear_browsing_data.h
@@ -101,8 +101,11 @@ class ClearBrowsingDataView : public ChromeViews::View,
 
   Profile* profile_;
 
+  // If non-null it means removal is in progress. BrowsingDataRemover takes care
+  // of deleting itself when done.
+  BrowsingDataRemover* remover_;
+
   DISALLOW_EVIL_CONSTRUCTORS(ClearBrowsingDataView);
 };
 
 #endif  // CHROME_BROWSER_VIEWS_CLEAR_BROWSING_DATA_H__
-