Update MultiProfile.md

Author: leonhsl

specs/MultiProfile.md

@@ -253,4 +253,37 @@ namespace Microsoft.Web.WebView2.Core
 # Appendix
 
 Next we'll consolidate all profile-wide operations/settings into the interface
-`ICoreWebView2Profile`, and will also add support for erasing a profile completely.
+`ICoreWebView2Profile`, and will also add support for erasing a profile completely
+if strongly requested. The idea is roughly illustrated as below.
+
+## Win32 C++
+
+```cpp
+[uuid(3B9A2AF2-E703-4C81-9D25-FCE44312E960), object, pointer_default(unique)]
+interface ICoreWebView2Profile : IUnknown {
+  // ...
+  
+  /// Gets the cookie manager object for this profile.
+  /// See ICoreWebView2CookieManager.
+  [propget] HRESULT CookieManager([out, retval] ICoreWebView2CookieManager** cookieManager);
+
+  /// Clears browsing data based on a specific data type. The completed handler
+  /// will be invoked when the browsing data has been cleared and will indicate
+  /// if the specified data was properly cleared.
+  HRESULT ClearBrowsingData(
+      [in] COREWEBVIEW2_BROWSING_DATA_KIND dataKind,
+      [in] ICoreWebView2ClearBrowsingDataCompletedHandler *handler);
+
+  /// Toggles whether autosave for password information is enabled. Disabled by default.
+  HRESULT TogglePasswordAutosaveEnabled([in] BOOL enable);
+
+  /// Toggles whether autofill for information like names, street and email addresses, phone
+  /// numbers, and arbitrary input is enabled. This excludes password and credit card
+  /// information. Enabled by default. 
+  HRESULT ToggleGeneralAutofillEnabled([in] BOOL enable);
+
+  /// Erase the profile completely. All webviews on this profile will be closed and the profile
+  /// directory on disk will be deleted.
+  HRESULT Erase([in] ICoreWebView2ProfileEraseCompletedHandler *handler);
+}
+```