Reland "Updating the putAll implementation to return one request."

This is a reland of 051f1395

The perf test idb-put-all.html was failing because idb_request
HandleResponse was checking to never receive empty blob handles. Fixing
by clearing the blob handles instead of using a DCHECK.

Original change's description:
> Updating the putAll implementation to return one request.
>
> This change updates the existing putAll implementation to match
> the explainer more. It does not yet support the put-all-or-none
> behavior, but it does only return one request now.
>
> Design Doc:
> https://docs.google.com/document/d/1wawQ8Pl-Vi6GQN5-y2UVkcghipcOGg0WRAC0ZyBkezg/edit#
>
> Bug: https://bugs.chromium.org/p/chromium/issues/detail?id=1087927
>
> Change-Id: I2c5e9d2d71801eaab3c1c9e94a3968afb8d109b2
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2310110
> Commit-Queue: Numfor Mbiziwo-tiapo <nums@google.com>
> Commit-Queue: Daniel Murphy <dmurph@chromium.org>
> Reviewed-by: Daniel Murphy <dmurph@chromium.org>
> Reviewed-by: Olivier Yiptong <oyiptong@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#793656}

Bug: https://bugs.chromium.org/p/chromium/issues/detail?id=1087927
Change-Id: I26e977d2b307dde33a78fdb4869116a25c56dde7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2335633
Auto-Submit: Numfor Mbiziwo-tiapo <nums@google.com>
Reviewed-by: Daniel Murphy <dmurph@chromium.org>
Reviewed-by: Olivier Yiptong <oyiptong@chromium.org>
Commit-Queue: Olivier Yiptong <oyiptong@chromium.org>
Cr-Commit-Position: refs/heads/master@{#796141}

third_party/blink/renderer/modules/indexeddb/idb_cursor.cc

@@ -123,7 +123,9 @@ IDBRequest* IDBCursor::update(ScriptState* script_state,
   IDBObjectStore* object_store = EffectiveObjectStore();
   return object_store->DoPut(script_state, mojom::IDBPutMode::CursorUpdate,
                              IDBRequest::Source::FromIDBCursor(this), value,
-                             IdbPrimaryKey(), exception_state);
+                             IdbPrimaryKey(), exception_state,
+                             /*optional_custom_callback=*/nullptr,
+                             /*blob_handles_out=*/nullptr);
 }
 
 void IDBCursor::advance(unsigned count, ExceptionState& exception_state) {

third_party/blink/renderer/modules/indexeddb/idb_object_store.h

@@ -102,7 +102,7 @@ class MODULES_EXPORT IDBObjectStore final : public ScriptWrappable {
                   const ScriptValue& key,
                   ExceptionState&);
   IDBRequest* put(ScriptState*, const ScriptValue& value, ExceptionState&);
-  HeapVector<Member<IDBRequest>> putAll(ScriptState*,
+  IDBRequest* putAll(ScriptState*,
                      const HeapVector<ScriptValue>& values,
                      ExceptionState&);
   IDBRequest* put(ScriptState*,
@@ -131,7 +131,9 @@ class MODULES_EXPORT IDBObjectStore final : public ScriptWrappable {
                     const IDBRequest::Source&,
                     const ScriptValue&,
                     const IDBKey*,
-                    ExceptionState&);
+                    ExceptionState&,
+                    std::unique_ptr<WebIDBCallbacks> optional_custom_callback,
+                    Vector<scoped_refptr<BlobDataHandle>>* blob_handles_out);
 
   // Used internally and by InspectorIndexedDBAgent:
   IDBRequest* openCursor(
@@ -207,7 +209,9 @@ class MODULES_EXPORT IDBObjectStore final : public ScriptWrappable {
                     mojom::IDBPutMode,
                     const ScriptValue&,
                     const ScriptValue& key_value,
-                    ExceptionState&);
+                    ExceptionState&,
+                    std::unique_ptr<WebIDBCallbacks> optional_custom_callback,
+                    Vector<scoped_refptr<BlobDataHandle>>* blob_handles_out);
 
   int64_t FindIndexId(const String& name) const;
 

third_party/blink/renderer/modules/indexeddb/idb_object_store.idl

@@ -42,7 +42,7 @@
       MeasureAs=IndexedDBWrite,
       RaisesException,
       RuntimeEnabled=IDBPutAll
-    ] sequence<IDBRequest> putAll(sequence<any> values);
+    ] IDBRequest putAll(sequence<any> values);
 
     [CallWith=ScriptState, MeasureAs=IndexedDBWrite, NewObject, RaisesException]
     IDBRequest add(any value, optional any key);

third_party/blink/renderer/modules/indexeddb/idb_request.cc

@@ -345,7 +345,7 @@ void IDBRequest::HandleResponse(int64_t value_or_old_version) {
 }
 
 void IDBRequest::HandleResponse() {
-  DCHECK(transit_blob_handles_.IsEmpty());
+  transit_blob_handles_.clear();
   if (!transaction_ || !transaction_->HasQueuedResults())
     return EnqueueResponse();
   transaction_->EnqueueResult(std::make_unique<IDBRequestQueueItem>(

third_party/blink/web_tests/external/wpt/IndexedDB/idbobjectstore_putall.tentative.any.js

@@ -3,23 +3,24 @@
 promise_test(async testCase => {
   const db = await createDatabase(testCase, db => {
     const store = createBooksStore(testCase, db);
+  });
+  const txn = db.transaction(['books'], 'readwrite');
+  const objectStore = txn.objectStore('books');
   let values = [
     {isbn: 'one', title: 'title1'},
     {isbn: 'two', title: 'title2'},
     {isbn: 'three', title: 'title3'}
   ];
-    const putAllRequests = store.putAll(values);
-    putAllRequests.forEach(async request => {
-      await promiseForRequest(testCase, request);
-    });
-  });
-
-  const txn = db.transaction(['books'], 'readonly');
-  const objectStore = txn.objectStore('books');
-  const getRequest1 = objectStore.get('one');
-  const getRequest2 = objectStore.get('two');
-  const getRequest3 = objectStore.get('three');
+  let putAllRequest = objectStore.putAll(values);
+  await promiseForRequest(testCase, putAllRequest);
   await promiseForTransaction(testCase, txn);
+
+  const txn2 = db.transaction(['books'], 'readonly');
+  const objectStore2 = txn2.objectStore('books');
+  const getRequest1 = objectStore2.get('one');
+  const getRequest2 = objectStore2.get('two');
+  const getRequest3 = objectStore2.get('three');
+  await promiseForTransaction(testCase, txn2);
   assert_array_equals(
       [getRequest1.result.title,
           getRequest2.result.title,