Convert app_bindings.js to the schema_generated_bindings.js infrastructure.

chrome/common/extensions/feature.h

Index: chrome/common/extensions/feature.h
diff --git a/chrome/common/extensions/feature.h b/chrome/common/extensions/feature.h
index 61a96a59382724ce607509221d21d62bec997721..749f4b3dbae10ff72bdff88d504dbc7ffb923dd9 100644
--- a/chrome/common/extensions/feature.h
+++ b/chrome/common/extensions/feature.h
@@ -22,11 +22,21 @@ namespace extensions {
 class Feature {
  public:
   // The JavaScript contexts the feature is supported in.
+  // TODO(kalman): s/PRIVILEGED/BLESSED_EXTENSION/
   enum Context {
     UNSPECIFIED_CONTEXT,
-    PRIVILEGED_CONTEXT,  // A context in a privileged extension process.
-    UNPRIVILEGED_CONTEXT,  // A context in a normal, unprivileged renderer.
-    CONTENT_SCRIPT_CONTEXT  // A context from a content script.
+
+    // A context in a privileged extension process.
+    PRIVILEGED_CONTEXT,
+
+    // A context in a normal, unprivileged renderer.
+    UNPRIVILEGED_CONTEXT,
+
+    // A context from a content script.
+    CONTENT_SCRIPT_CONTEXT,
+
+    // A normal web page. This should have an associated URL matching pattern.
+    WEB_PAGE_CONTEXT,
   };
 
   // The location required of extensions the feature is supported in.