WIP: Adjust externally allocated memory when ImageBitmap is transferred

third_party/WebKit/Source/platform/graphics/StaticBitmapImage.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "platform/graphics/StaticBitmapImage.h"
 
 #include "platform/graphics/AcceleratedStaticBitmapImage.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/ImageObserver.h"
 #include "platform/graphics/UnacceleratedStaticBitmapImage.h"
 #include "platform/graphics/paint/PaintImage.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkImage.h"
 #include "third_party/skia/include/core/SkPaint.h"
+#include "v8/include/v8.h"
 
 namespace blink {
 
 PassRefPtr<StaticBitmapImage> StaticBitmapImage::Create(sk_sp<SkImage> image) {
   if (!image)
     return nullptr;
   if (image->isTextureBacked())
     return AcceleratedStaticBitmapImage::CreateFromSharedContextImage(
         std::move(image));
   return UnacceleratedStaticBitmapImage::Create(std::move(image));
@@ skipping 15 matching lines @@
                                         : PaintImage::AnimationType::STATIC;
   auto completion_state = CurrentFrameIsComplete()
                               ? PaintImage::CompletionState::DONE
                               : PaintImage::CompletionState::PARTIALLY_DONE;
   canvas->drawImageRect(
       PaintImage(std::move(image), animation_type, completion_state),
       adjusted_src_rect, dst_rect, &flags,
       WebCoreClampingModeToSkiaRectConstraint(clamp_mode));
 }
 
+void StaticBitmapImage::RegisterExternalAllocationWithCurrentContext() {
+  int externallyAllocatedMemory = Size().Width() * Size().Height() * 4;
+  v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory(
+      static_cast<int64_t>(externallyAllocatedMemory));
+}
+
+void StaticBitmapImage::UnregisterExternalAllocationWithCurrentContext() {
+  int externallyAllocatedMemory = Size().Width() * Size().Height() * 4;
+  v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory(
+      -static_cast<int64_t>(externallyAllocatedMemory));
+}
+
 }  // namespace blink