IPC plumbing for IndexedDB to snapshot metadata to the renderer.

content/common/indexed_db/proxy_webidbdatabase_impl.cc

Index: content/common/indexed_db/proxy_webidbdatabase_impl.cc
diff --git a/content/common/indexed_db/proxy_webidbdatabase_impl.cc b/content/common/indexed_db/proxy_webidbdatabase_impl.cc
index 5e53f7b635c7738c57a94cffb850325c930cb556..71b7fe5cdb18e94694acc1ad36ef8106e4cc7cf4 100644
--- a/content/common/indexed_db/proxy_webidbdatabase_impl.cc
+++ b/content/common/indexed_db/proxy_webidbdatabase_impl.cc
@@ -10,6 +10,7 @@
 #include "content/common/indexed_db/proxy_webidbobjectstore_impl.h"
 #include "content/common/indexed_db/proxy_webidbtransaction_impl.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBKeyPath.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBMetadata.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebString.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebVector.h"
 #include "webkit/glue/worker_task_runner.h"
@@ -19,7 +20,10 @@ using WebKit::WebExceptionCode;
 using WebKit::WebFrame;
 using WebKit::WebIDBCallbacks;
 using WebKit::WebIDBDatabaseCallbacks;
+using WebKit::WebIDBDatabaseMetadata;
+using WebKit::WebIDBIndexMetadata;
 using WebKit::WebIDBKeyPath;
+using WebKit::WebIDBObjectStoreMetadata;
 using WebKit::WebIDBTransaction;
 using WebKit::WebString;
 using WebKit::WebVector;
@@ -38,6 +42,45 @@ RendererWebIDBDatabaseImpl::~RendererWebIDBDatabaseImpl() {
       idb_database_id_));
 }
 
+WebIDBDatabaseMetadata RendererWebIDBDatabaseImpl::metadata() const {
+  IndexedDBDatabaseMetadata idb_metadata;
+  IndexedDBDispatcher::Send(
+      new IndexedDBHostMsg_DatabaseMetadata(idb_database_id_, &idb_metadata));
+
+  WebIDBDatabaseMetadata web_db_metadata;
+  web_db_metadata.name = idb_metadata.name;
+  web_db_metadata.version = idb_metadata.version;
+  web_db_metadata.objectStores = WebVector<WebIDBObjectStoreMetadata>(
+      idb_metadata.object_stores.size());
+
+  for (size_t i = 0; i < idb_metadata.object_stores.size(); ++i) {
+    const IndexedDBObjectStoreMetadata& idb_store_metadata =
+        idb_metadata.object_stores[i];
+    WebIDBObjectStoreMetadata& web_store_metadata =
+        web_db_metadata.objectStores[i];
+
+    web_store_metadata.name = idb_store_metadata.name;
+    web_store_metadata.keyPath = idb_store_metadata.keyPath;
+    web_store_metadata.autoIncrement = idb_store_metadata.autoIncrement;
+    web_store_metadata.indexes = WebVector<WebIDBIndexMetadata>(
+        idb_store_metadata.indexes.size());
+
+    for (size_t j = 0; j < idb_store_metadata.indexes.size(); ++j) {
+      const IndexedDBIndexMetadata& idb_index_metadata =
+          idb_store_metadata.indexes[j];
+      WebIDBIndexMetadata& web_index_metadata =
+          web_store_metadata.indexes[j];
+
+      web_index_metadata.name = idb_index_metadata.name;
+      web_index_metadata.keyPath = idb_index_metadata.keyPath;
+      web_index_metadata.unique = idb_index_metadata.unique;
+      web_index_metadata.multiEntry = idb_index_metadata.multiEntry;
+    }
+  }
+
+  return web_db_metadata;
+}
+
 WebString RendererWebIDBDatabaseImpl::name() const {
   string16 result;
   IndexedDBDispatcher::Send(