Allow content script insertion on about:-URLs.

chrome/renderer/extensions/user_script_scheduler.cc

Index: chrome/renderer/extensions/user_script_scheduler.cc
diff --git a/chrome/renderer/extensions/user_script_scheduler.cc b/chrome/renderer/extensions/user_script_scheduler.cc
index d4b77d1aa96a50e98bd099763cd3e79296ef9792..5152d1388f7227f9a6c281aafaf9c795c0c59fca 100644
--- a/chrome/renderer/extensions/user_script_scheduler.cc
+++ b/chrome/renderer/extensions/user_script_scheduler.cc
@@ -184,21 +184,24 @@ void UserScriptScheduler::ExecuteCodeImpl(
     //
     // For child frames, we just skip ones the extension doesn't have access
     // to and carry on.
-    if (!params.is_web_view &&
-        !PermissionsData::CanExecuteScriptOnPage(extension,
-                                                 child_frame->document().url(),
-                                                 frame_->document().url(),
-                                                 extension_helper->tab_id(),
-                                                 NULL,
-                                                 -1,
-                                                 NULL)) {
-      if (child_frame->parent()) {
-        continue;
-      } else {
-        error = ErrorUtils::FormatErrorMessage(
-            manifest_errors::kCannotAccessPage,
-            child_frame->document().url().spec());
-        break;
+    if (!params.is_web_view) {
+      GURL document_url = UserScriptSlave::GetEffectiveDocumentURL(
+          child_frame, child_frame->document().url(), params.match_about_blank);
+
+      if (!PermissionsData::CanExecuteScriptOnPage(extension,
+                                                   document_url,
+                                                   frame_->document().url(),
+                                                   extension_helper->tab_id(),
+                                                   NULL,
+                                                   -1,
+                                                   NULL)) {
+        if (child_frame->parent()) {
+          continue;
+        } else {
+          error = ErrorUtils::FormatErrorMessage(
+              manifest_errors::kCannotAccessPage, document_url.spec());
+          break;
+        }
       }
     }