Allow extensions of the ManifestParser outside of the content/ layer.

chrome/renderer/chrome_content_renderer_client.cc

Index: chrome/renderer/chrome_content_renderer_client.cc
diff --git a/chrome/renderer/chrome_content_renderer_client.cc b/chrome/renderer/chrome_content_renderer_client.cc
index 631eafe0f3297fc03ce934fdef150c56fc9433ce..0c74a59322e38ae1af3437f0fd1063ed2bf61be1 100644
--- a/chrome/renderer/chrome_content_renderer_client.cc
+++ b/chrome/renderer/chrome_content_renderer_client.cc
@@ -33,6 +33,7 @@
 #include "chrome/renderer/content_settings_observer.h"
 #include "chrome/renderer/external_extension.h"
 #include "chrome/renderer/loadtimes_extension_bindings.h"
+#include "chrome/renderer/manifest/manifest_parser.h"
 #include "chrome/renderer/media/chrome_key_systems.h"
 #include "chrome/renderer/net/net_error_helper.h"
 #include "chrome/renderer/net_benchmarking_extension.h"
@@ -1627,3 +1628,9 @@ ChromeContentRendererClient::CreateBrowserPluginDelegate(
   return NULL;
 #endif
 }
+
+bool ChromeContentRendererClient::ParseManifestProperty(
+    const std::string& key, const base::Value& value) {
+  //*parser = new ChromeManifestParser();
+  return false;
+}