Trigger Blink GC on v8::kGCCallbackFlagCollectAllExternalMemory

third_party/WebKit/Source/bindings/core/v8/V8GCController.cpp

Index: third_party/WebKit/Source/bindings/core/v8/V8GCController.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/V8GCController.cpp b/third_party/WebKit/Source/bindings/core/v8/V8GCController.cpp
index 65d5796c042b88751e32c60eb7d3dc3f3e554f97..51b46863fe6f60466fabb4b5e84b14e09973575b 100644
--- a/third_party/WebKit/Source/bindings/core/v8/V8GCController.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/V8GCController.cpp
@@ -376,7 +376,8 @@ void V8GCController::gcEpilogue(v8::Isolate* isolate, v8::GCType type, v8::GCCal
 
         // v8::kGCCallbackFlagCollectAllAvailableGarbage is used when V8 handles
         // low memory notifications.
-        if (flags & v8::kGCCallbackFlagCollectAllAvailableGarbage) {
+        if ((flags & v8::kGCCallbackFlagCollectAllAvailableGarbage)
+            || (flags & v8::kGCCallbackFlagCollectAllExternalMemory)) {
             // This single GC is not enough. See the above comment.
             ThreadHeap::collectGarbage(BlinkGC::HeapPointersOnStack, BlinkGC::GCWithSweep, BlinkGC::ForcedGC);