WIP: Adjust externally allocated memory when ImageBitmap is transferred

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

Index: third_party/WebKit/Source/platform/graphics/StaticBitmapImage.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/StaticBitmapImage.cpp b/third_party/WebKit/Source/platform/graphics/StaticBitmapImage.cpp
index 4e9bd685c154dc2c69b912222e5e614d88d32365..89cdcb86a51f3e35f67d9bfd58a6ab131ae6df61 100644
--- a/third_party/WebKit/Source/platform/graphics/StaticBitmapImage.cpp
+++ b/third_party/WebKit/Source/platform/graphics/StaticBitmapImage.cpp
@@ -12,6 +12,7 @@
 #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 {
 
@@ -47,4 +48,16 @@ void StaticBitmapImage::DrawHelper(PaintCanvas* canvas,
       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