Allow content script insertion on about:-URLs.

extensions/renderer/user_script_scheduler.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "extensions/renderer/user_script_scheduler.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "content/public/renderer/render_view.h"
@@ skipping 170 matching lines @@
     // with navigation.
     //
     // But different frames can have different URLs, and the extension might
     // only have access to a subset of them. For the top frame, we can
     // immediately send an error and stop because the browser process
     // considers that an error too.
     //
     // For child frames, we just skip ones the extension doesn't have access
     // to and carry on.
 
+    GURL document_url = ScriptContext::GetEffectiveDocumentURL(
+        child_frame, child_frame->document().url(), params.match_about_blank);
     bool can_execute_script =
         PermissionsData::CanExecuteScriptOnPage(extension,
-                                                child_frame->document().url(),
+                                                document_url,
                                                 top_url,
                                                 extension_helper->tab_id(),
                                                 NULL,
                                                 -1,
                                                 NULL);
     if ((!params.is_web_view && !can_execute_script) ||
-        (params.is_web_view &&
-         child_frame->document().url() != params.webview_src)) {
+        (params.is_web_view && document_url != params.webview_src)) {
       if (child_frame->parent()) {
         continue;
       } else {
         error = ErrorUtils::FormatErrorMessage(
-            manifest_errors::kCannotAccessPage,
-            child_frame->document().url().spec());
+            manifest_errors::kCannotAccessPage, document_url.spec());
         break;
       }
     }
 
     if (params.is_javascript) {
       WebScriptSource source(WebString::fromUTF8(params.code), params.file_url);
       v8::HandleScope scope(v8::Isolate::GetCurrent());
 
       scoped_ptr<content::V8ValueConverter> v8_converter(
           content::V8ValueConverter::create());
@@ skipping 53 matching lines @@
 
   for (WebFrame* child_frame = parent_frame->firstChild(); child_frame;
        child_frame = child_frame->nextSibling()) {
     frames_vector->push_back(child_frame);
     GetAllChildFrames(child_frame, frames_vector);
   }
   return true;
 }
 
 }  // namespace extensions