Allow content script insertion on about:-URLs.

chrome/common/extensions/manifest_handlers/content_scripts_handler.cc

 // Copyright (c) 2013 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 "chrome/common/extensions/manifest_handlers/content_scripts_handler.h"
 
 #include "base/file_util.h"
 #include "base/lazy_instance.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 92 matching lines @@
   if (content_script->HasKey(keys::kAllFrames)) {
     bool all_frames = false;
     if (!content_script->GetBoolean(keys::kAllFrames, &all_frames)) {
       *error = ErrorUtils::FormatErrorMessageUTF16(
             errors::kInvalidAllFrames, base::IntToString(definition_index));
       return false;
     }
     result->set_match_all_frames(all_frames);
   }
 
+  // match about blank
+  if (content_script->HasKey(keys::kMatchAboutBlank)) {
+    bool match_about_blank = false;
+    if (!content_script->GetBoolean(keys::kMatchAboutBlank,
+                                    &match_about_blank)) {
+      *error = ErrorUtils::FormatErrorMessageUTF16(
+          errors::kInvalidMatchAboutBlank, base::IntToString(definition_index));
+      return false;
+    }
+    result->set_match_about_blank(match_about_blank);
+  }
+
   // matches (required)
   const base::ListValue* matches = NULL;
   if (!content_script->GetList(keys::kMatches, &matches)) {
     *error = ErrorUtils::FormatErrorMessageUTF16(
         errors::kInvalidMatches,
         base::IntToString(definition_index));
     return false;
   }
 
   if (matches->GetSize() == 0) {
@@ skipping 336 matching lines @@
       if (!IsScriptValid(path, css_script.relative_path(),
                          IDS_EXTENSION_LOAD_CSS_FAILED, error))
         return false;
     }
   }
 
   return true;
 }
 
 }  // namespace extensions