Enable win32k lockdown for ppapi processes.

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index 106382cedb8cc807e1731e61d75b25198b442e2a..b0c0222f03c39fa191fd8a31bae7f655bef0d40c 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -6807,24 +6807,6 @@ Keep your key file in a safe place. You will need it to create new versions of y
         Disallows fetches for third-party parser-blocking scripts inserted into the main frame via document.write.
       </message>
       <if expr="is_win">
-        <message name="IDS_FLAGS_PPAPI_WIN32K_LOCKDOWN_NAME" desc="Name of the flag to enable PPAPI win32k lockdown experiment.">
-          Enable PPAPI Win32k Lockdown.
-        </message>
-        <message name="IDS_FLAGS_PPAPI_WIN32K_LOCKDOWN_DESCRIPTION" desc="Description of the flag to enable PPAPI win32k lockdown experiment.">
-          Specify the PPAPI plugins which will be run within the Win32k lockdown sandbox policy (Windows 10 and above only).
-        </message>
-        <message name="IDS_FLAGS_PPAPI_WIN32K_LOCKDOWN_FLASH_ONLY" desc="Enable Win32k lockdown for Flash">
-          Flash only
-        </message>
-        <message name="IDS_FLAGS_PPAPI_WIN32K_LOCKDOWN_PDF_ONLY" desc="Enable Win32k lockdown for PDF">
-          PDF only
-        </message>
-        <message name="IDS_FLAGS_PPAPI_WIN32K_LOCKDOWN_FLASH_AND_PDF" desc="Enable Win32k lockdown for Flash and PDF">
-          Flash and PDF
-        </message>
-        <message name="IDS_FLAGS_PPAPI_WIN32K_LOCKDOWN_ALL" desc="Enable Win32k lockdown for all plugins">
-          All plugins
-        </message>
         <message name="IDS_FLAGS_ENABLE_APPCONTAINER_NAME" desc="Name of the flag to enable AppContainer lockdown experiment.">
           Enable AppContainer Lockdown.
         </message>