IndexedDB: Re-enable large value wrapping.

This CL removes the feature flag gating IndexedDB large value wrapping.
The feature will be rolled out using Chrome's standard waterfall release
model.

Bug: 844782
Change-Id: Ie33675293a1c592c8731ab380ae9c55674ee6ae4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2056863
Commit-Queue: Daniel Murphy <dmurph@chromium.org>
Auto-Submit: Victor Costan <pwnall@chromium.org>
Reviewed-by: Daniel Murphy <dmurph@chromium.org>
Cr-Commit-Position: refs/heads/master@{#741600}

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

@@ -584,8 +584,7 @@ IDBRequest* IDBObjectStore::DoPut(ScriptState* script_state,
 
   value_wrapper.DoneCloning();
 
-  if (base::FeatureList::IsEnabled(kIndexedDBLargeValueWrapping))
-    value_wrapper.WrapIfBiggerThan(IDBValueWrapper::kWrapThreshold);
+  value_wrapper.WrapIfBiggerThan(IDBValueWrapper::kWrapThreshold);
 
   auto idb_value = std::make_unique<IDBValue>(value_wrapper.TakeWireBytes(),
                                               value_wrapper.TakeBlobInfo());

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

@@ -27,9 +27,6 @@ class ScriptState;
 class ScriptValue;
 class SerializedScriptValue;
 
-const base::Feature kIndexedDBLargeValueWrapping{
-    "IndexedDBLargeValueWrapping", base::FEATURE_DISABLED_BY_DEFAULT};
-
 // Logic for serializing V8 values for storage in IndexedDB.
 //
 // An IDBValueWrapper instance drives the serialization of a single V8 value to