Remove code which CHECKs for a valid extension ID in

chrome/renderer/extensions/extension_dispatcher.cc

Index: chrome/renderer/extensions/extension_dispatcher.cc
diff --git a/chrome/renderer/extensions/extension_dispatcher.cc b/chrome/renderer/extensions/extension_dispatcher.cc
index 23c57e46c3f9e365fbdd7f291a281bea697cb7b0..5020ff1caea8cfaf18295ddd75ad08941e8608f2 100644
--- a/chrome/renderer/extensions/extension_dispatcher.cc
+++ b/chrome/renderer/extensions/extension_dispatcher.cc
@@ -329,15 +329,12 @@ bool ExtensionDispatcher::AllowScriptExtension(
       std::string extension_id = GetExtensionID(frame, world_id);
       const Extension* extension = extensions_.GetByID(extension_id);
       if (!extension) {
-        // This can happen when a resource is blocked due to CSP; a valid
-        // chrome-extension:// URL is navigated to, so it passes the initial
-        // checks, but the URL gets changed to "chrome-extension://invalid"
-        // afterwards (see chrome_content_renderer_client.cc). An extension
-        // page still gets loaded, just for the extension with ID "invalid",
-        // which of course isn't found so GetById extension will be NULL.
-        //
-        // Reference: http://crbug.com/111614.
-        CHECK_EQ("invalid", extension_id);
+        if (extension_id != "invalid") {
+          // Ignore "invalid" because CSP blocks extension page loading by
+          // switching the extension ID to "invalid". This isn't interesting.
+          LOG(ERROR) << "Extension \"" << extension_id << "\" not found";
+          RenderThread::Get()->RecordUserMetrics("ExtensionNotFound_ED");
+        }
         return false;
       }
       return util::AllowAPIInjection(custom_binding_api_name, *extension, this);