[IndexedDB] Propogating changes to observers : Renderer

content/browser/indexed_db/indexed_db_database.cc

Index: content/browser/indexed_db/indexed_db_database.cc
diff --git a/content/browser/indexed_db/indexed_db_database.cc b/content/browser/indexed_db/indexed_db_database.cc
index a73ba298ee5616a7fdbbe4925781907e33cae45f..ae9f78de7d7d5b8366dba5f7cdb484f09fa411d7 100644
--- a/content/browser/indexed_db/indexed_db_database.cc
+++ b/content/browser/indexed_db/indexed_db_database.cc
@@ -29,6 +29,8 @@
 #include "content/browser/indexed_db/indexed_db_cursor.h"
 #include "content/browser/indexed_db/indexed_db_factory.h"
 #include "content/browser/indexed_db/indexed_db_index_writer.h"
+#include "content/browser/indexed_db/indexed_db_observation.h"
+#include "content/browser/indexed_db/indexed_db_observer_changes.h"
 #include "content/browser/indexed_db/indexed_db_pending_connection.h"
 #include "content/browser/indexed_db/indexed_db_return_value.h"
 #include "content/browser/indexed_db/indexed_db_tracing.h"
@@ -561,6 +563,40 @@ void IndexedDBDatabase::RemovePendingObservers(
   }
 }
 
+// TODO(palakj): Augment the function with IDBValue later.
+void IndexedDBDatabase::FilterObservation(IndexedDBTransaction* transaction,
+                                          int64_t object_store_id,
+                                          blink::WebIDBOperationType type,
+                                          const IndexedDBKeyRange& key_range) {
+  for (const auto* connection : connections_) {
+    bool recorded = false;
+    for (const auto& observer : connection->active_observers()) {
+      if (observer->IsRecordingType(type) &&
+          observer->IsRecordingObjectStore(object_store_id)) {
+        if (!recorded) {
+          if (type == blink::WebIDBClear) {
+            transaction->AddObservation(
+                connection->id(),
+                base::WrapUnique(new IndexedDBObservation(type)));
+          } else {
+            transaction->AddObservation(
+                connection->id(),
+                base::WrapUnique(new IndexedDBObservation(type, key_range)));
+          }
+          recorded = true;
+        }
+        transaction->AddObservationIndex(observer->id(), connection->id());
+      }
+    }
+  }
+}
+
+void IndexedDBDatabase::SendObservations(
+    std::map<int32_t, std::unique_ptr<IndexedDBObserverChanges>> change_map) {
+  for (const auto& it : connections_)
+    it->callbacks()->OnDatabaseChange(std::move(change_map[it->id()]));
+}
+
 void IndexedDBDatabase::GetAll(int64_t transaction_id,
                                int64_t object_store_id,
                                int64_t index_id,
@@ -1115,6 +1151,12 @@ void IndexedDBDatabase::PutOperation(std::unique_ptr<PutOperationParams> params,
                transaction->id());
     params->callbacks->OnSuccess(*key);
   }
+
+  FilterObservation(transaction, params->object_store_id,
+                    params->put_mode == blink::WebIDBPutModeAddOnly
+                        ? blink::WebIDBAdd
+                        : blink::WebIDBPut,
+                    IndexedDBKeyRange(*key));
 }
 
 void IndexedDBDatabase::SetIndexKeys(int64_t transaction_id,
@@ -1458,6 +1500,8 @@ void IndexedDBDatabase::DeleteRangeOperation(
   } else {
     callbacks->OnSuccess();
   }
+  FilterObservation(transaction, object_store_id, blink::WebIDBDelete,
+                    *key_range);
 }
 
 void IndexedDBDatabase::Clear(int64_t transaction_id,
@@ -1493,6 +1537,9 @@ void IndexedDBDatabase::ClearOperation(
     return;
   }
   callbacks->OnSuccess();
+
+  FilterObservation(transaction, object_store_id, blink::WebIDBClear,
+                    IndexedDBKeyRange());
 }
 
 void IndexedDBDatabase::DeleteObjectStoreOperation(