Convert tabs, windows, and extension APIs to feature system.

chrome/browser/extensions/extension_function_dispatcher.cc

Index: chrome/browser/extensions/extension_function_dispatcher.cc
diff --git a/chrome/browser/extensions/extension_function_dispatcher.cc b/chrome/browser/extensions/extension_function_dispatcher.cc
index 588d08851e36298e00f647f0c649e11eb4722ea3..30eeb2f4db98f37969892f825c255bf616881247 100644
--- a/chrome/browser/extensions/extension_function_dispatcher.cc
+++ b/chrome/browser/extensions/extension_function_dispatcher.cc
@@ -27,6 +27,7 @@
 #include "chrome/common/extensions/api/extension_api.h"
 #include "chrome/common/extensions/extension_messages.h"
 #include "chrome/common/extensions/extension_set.h"
+#include "chrome/common/extensions/feature.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
@@ -37,6 +38,7 @@
 #include "webkit/glue/resource_type.h"
 
 using extensions::ExtensionAPI;
+using extensions::Feature;
 using content::RenderViewHost;
 using WebKit::WebSecurityOrigin;
 
@@ -272,6 +274,26 @@ ExtensionFunction* ExtensionFunctionDispatcher::CreateExtensionFunction(
     return NULL;
   }
 
+  // If the API has been ported to the feature system, use that.
+  if (api->GetFeature(params.name)) {
+    if (!api->IsAvailable(
+            params.name,
+            extension,
+            static_cast<Feature::Context>(params.source_context_type))) {
+      LOG(ERROR) << "Access to extension API '" << params.name << "' denied.";
+      return NULL;
+    }
+  } else {
+    // Otherwise, fall back to the older system.
+    if (!extension->HasAPIPermission(params.name)) {
+      LOG(ERROR) << "Extension " << extension->id() << " does not have "
+                 << "permission to function: " << params.name;
+      SendAccessDenied(ipc_sender, routing_id, params.request_id);
+      return NULL;
+    }
+  }
+
+  // If the API requires a privileged process, ensure it is in one.
   if (api->IsPrivileged(params.name) &&
       !process_map.Contains(extension->id(), requesting_process_id)) {
     LOG(ERROR) << "Extension API called from incorrect process "
@@ -281,13 +303,6 @@ ExtensionFunction* ExtensionFunctionDispatcher::CreateExtensionFunction(
     return NULL;
   }
 
-  if (!extension->HasAPIPermission(params.name)) {
-    LOG(ERROR) << "Extension " << extension->id() << " does not have "
-               << "permission to function: " << params.name;
-    SendAccessDenied(ipc_sender, routing_id, params.request_id);
-    return NULL;
-  }
-
   ExtensionFunction* function =
       ExtensionFunctionRegistry::GetInstance()->NewFunction(params.name);
   function->SetArgs(&params.arguments);