Merge 109171 - [chromium] Inform v8 about extra memory used for PatternSkia clamp mode

Source/WebCore/platform/graphics/skia/PatternSkia.cpp

Index: Source/WebCore/platform/graphics/skia/PatternSkia.cpp
===================================================================
--- Source/WebCore/platform/graphics/skia/PatternSkia.cpp	(revision 109773)
+++ Source/WebCore/platform/graphics/skia/PatternSkia.cpp	(working copy)
@@ -38,12 +38,18 @@
 #include "SkColorShader.h"
 #include "SkShader.h"
 
+#include <v8.h>
+
 namespace WebCore {
 
 void Pattern::platformDestroy()
 {
     SkSafeUnref(m_pattern);
     m_pattern = 0;
+    if (m_externalMemoryAllocated) {
+        v8::V8::AdjustAmountOfExternalAllocatedMemory(-m_externalMemoryAllocated);
+        m_externalMemoryAllocated = 0;
+    }
 }
 
 PlatformPatternPtr Pattern::platformPattern(const AffineTransform& patternTransform)
@@ -89,6 +95,9 @@
         SkCanvas canvas(bm2);
         canvas.drawBitmap(image->bitmap(), 0, 0);
         m_pattern = SkShader::CreateBitmapShader(bm2, tileModeX, tileModeY);
+
+        m_externalMemoryAllocated = bm2.getSafeSize();
+        v8::V8::AdjustAmountOfExternalAllocatedMemory(m_externalMemoryAllocated);
     }
     m_pattern->setLocalMatrix(m_patternSpaceTransformation);
     return m_pattern;