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

chrome/test/data/extensions/api_test/content_scripts/extension_iframe/iframe.js

Index: chrome/test/data/extensions/api_test/content_scripts/extension_iframe/iframe.js
diff --git a/chrome/test/data/extensions/api_test/content_scripts/extension_iframe/iframe.js b/chrome/test/data/extensions/api_test/content_scripts/extension_iframe/iframe.js
index 572f28047d6e70af9e6b7d1067db10fe3743bd9d..0858517a9c7fd39dcbf6b0b038ededab2f0a3d31 100644
--- a/chrome/test/data/extensions/api_test/content_scripts/extension_iframe/iframe.js
+++ b/chrome/test/data/extensions/api_test/content_scripts/extension_iframe/iframe.js
@@ -11,7 +11,7 @@ function runsWithException(f) {
     console.log('Error: ' + f + '" doesn\'t throw exception.');
     return false;
   } catch (e) {
-    if (e.message.indexOf(' can only be used in extension processes.') > -1) {
+    if (e.message.indexOf(' cannot be used in this context.') > -1) {
       return true;
     } else {
       console.log('Error: incorrect exception message: ' + e.message);
@@ -28,11 +28,18 @@ if (chrome.storage) {
   success = false;
 }
 
-// Ditto chrome.tabs, though it's special because it's a dependency of the
-// partially unprivileged chrome.extension.
-if (chrome.tabs) {
-  console.log('Error: chrome.tabs exists, it shouldn\'t.');
-  success = false;
+// Ditto all children of chrome.tabs.
+for (p in chrome.tabs) {
+  if (chrome.tabs.hasOwnProperty(p)) {
+    if (["remove", "create", "update"].indexOf(p) == -1) {
+      if (!runsWithException(
+              function(p) { return chrome.tabs[p]; }.bind(null, p))) {
+        console.log(p);
+        success = false;
+        break;
+      }
+    }
+  }
 }
 
 // Parts of chrome.extension are unavailable.