Introduce lock screen app context to extension features

extensions/browser/process_map.cc

Index: extensions/browser/process_map.cc
diff --git a/extensions/browser/process_map.cc b/extensions/browser/process_map.cc
index b3100201d011331d40fc8839a82b28b61fc92a24..5fc1284a33f712a9e1be824b1767c2b178fb6b5a 100644
--- a/extensions/browser/process_map.cc
+++ b/extensions/browser/process_map.cc
@@ -116,8 +116,8 @@ std::set<std::string> ProcessMap::GetExtensionsInProcess(int process_id) const {
 Feature::Context ProcessMap::GetMostLikelyContextType(
     const Extension* extension,
     int process_id) const {
-  // WARNING: This logic must match Dispatcher::ClassifyJavaScriptContext, as
-  // much as possible.
+  // WARNING: This logic must match ScriptContextSet::ClassifyJavaScriptContext,
+  // as much as possible.
 
   if (content::ChildProcessSecurityPolicy::GetInstance()->HasWebUIBindings(
           process_id)) {
@@ -140,6 +140,9 @@ Feature::Context ProcessMap::GetMostLikelyContextType(
     return Feature::BLESSED_WEB_PAGE_CONTEXT;
   }
 
+  if (extension->runs_on_lock_screen())
+    return Feature::LOCK_SCREEN_EXTENSION_CONTEXT;
+
   return Feature::BLESSED_EXTENSION_CONTEXT;
 }