Port IndexedDB open() and database callbacks to Mojo.

content/browser/renderer_host/render_process_host_impl.h

Index: content/browser/renderer_host/render_process_host_impl.h
diff --git a/content/browser/renderer_host/render_process_host_impl.h b/content/browser/renderer_host/render_process_host_impl.h
index 60994e910cacea09268c7dce2b51c1766db0d770..e033d309e8d4749f4c99cc35565e08bb309d0520 100644
--- a/content/browser/renderer_host/render_process_host_impl.h
+++ b/content/browser/renderer_host/render_process_host_impl.h
@@ -58,6 +58,8 @@ class AudioInputRendererHost;
 class AudioRendererHost;
 class BrowserCdmManager;
 class BrowserDemuxerAndroid;
+class DatabaseFactoryImpl;
+class IndexedDBDispatcherHost;
 class InProcessChildThreadParams;
 class MessagePortMessageFilter;
 class MojoChildConnection;
@@ -561,6 +563,9 @@ class CONTENT_EXPORT RenderProcessHostImpl
   // The memory allocator, if any, in which the renderer will write its metrics.
   std::unique_ptr<base::SharedPersistentMemoryAllocator> metrics_allocator_;
 
+  scoped_refptr<IndexedDBDispatcherHost> idb_dispatcher_host_;
+  std::unique_ptr<DatabaseFactoryImpl> idb_database_factory_;
+
   bool channel_connected_;
   bool sent_render_process_ready_;