diff --git a/third_party/WebKit/Source/core/editing/EditingBehavior.h b/third_party/WebKit/Source/core/editing/EditingBehavior.h
index 2a500e3..8297121 100644
--- a/third_party/WebKit/Source/core/editing/EditingBehavior.h
+++ b/third_party/WebKit/Source/core/editing/EditingBehavior.h
@@ -69,7 +69,7 @@ public:
     // On Mac and Windows, pressing backspace (when it isn't handled otherwise) should navigate back.
     bool shouldNavigateBackOnBackspace() const
     {
-        return m_type != EditingUnixBehavior && m_type != EditingAndroidBehavior;
+        return false;
     }
 
     // On Mac, selecting backwards by word/line from the middle of a word/line, and then going

Add patch to disable history.back on backspace
Add patch to disable history.back on backspace
