Adds DCHECK to BuiltinManifestProvider

content/browser/mojo/mojo_shell_context.cc

 // Copyright 2015 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 "content/browser/mojo/mojo_shell_context.h"
 
 #include <unordered_map>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 130 matching lines @@
 
  private:
   // catalog::ManifestProvider:
   bool GetApplicationManifest(const base::StringPiece& name,
                               std::string* manifest_contents) override {
     auto it = manifest_resources_.find(name.as_string());
     if (it == manifest_resources_.end())
       return false;
     *manifest_contents = GetContentClient()->GetDataResource(
         it->second, ui::ScaleFactor::SCALE_FACTOR_NONE).as_string();
+    DCHECK(!manifest_contents->empty());
     return true;
   }
 
   std::unordered_map<std::string, int> manifest_resources_;
 
   DISALLOW_COPY_AND_ASSIGN(BuiltinManifestProvider);
 };
 
 // Thread-safe proxy providing access to the shell context from any thread.
 class MojoShellContext::Proxy {
@@ skipping 174 matching lines @@
   shell::Identity source_id(requestor_name, user_id);
   params->set_source(source_id);
   params->set_target(shell::Identity(name, user_id));
   params->set_remote_interfaces(std::move(request));
   params->set_local_interfaces(std::move(exposed_services));
   params->set_connect_callback(callback);
   shell_->Connect(std::move(params));
 }
 
 }  // namespace content