Copy SkMetaData before painting printed plugin contents.

Source/platform/graphics/paint/SkPictureBuilder.h

 // Copyright 2015 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.
 
 #ifndef SkPictureBuilder_h
 #define SkPictureBuilder_h
 
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/paint/DisplayItemList.h"
 #include "wtf/OwnPtr.h"
 
 namespace blink {
 
 // When slimming paint ships we can remove this SkPicture abstraction and
 // rely on DisplayItemList here.
 class SkPictureBuilder {
     WTF_MAKE_NONCOPYABLE(SkPictureBuilder);
     STACK_ALLOCATED();
 public:
-    SkPictureBuilder(const FloatRect& bounds, GraphicsContext::DisabledMode disabledMode = GraphicsContext::NothingDisabled)
+    SkPictureBuilder(const FloatRect& bounds, GraphicsContext::DisabledMode disabledMode = GraphicsContext::NothingDisabled, SkMetaData* metaData = 0)
         : m_bounds(bounds)
     {
         if (RuntimeEnabledFeatures::slimmingPaintEnabled()) {
             m_displayItemList = DisplayItemList::create();
-            m_context = adoptPtr(new GraphicsContext(m_displayItemList.get(), disabledMode));
+            m_context = adoptPtr(new GraphicsContext(m_displayItemList.get(), disabledMode, metaData));
         } else {
-            m_context = GraphicsContext::deprecatedCreateWithCanvas(nullptr, disabledMode);
+            m_context = GraphicsContext::deprecatedCreateWithCanvas(nullptr, disabledMode, metaData);
             m_context->beginRecording(m_bounds);
         }
     }
 
     GraphicsContext& context() { return *m_context; }
 
     PassRefPtr<const SkPicture> endRecording()
     {
         if (!RuntimeEnabledFeatures::slimmingPaintEnabled())
             return m_context->endRecording();
 
         m_context->beginRecording(m_bounds);
         m_displayItemList->commitNewDisplayItemsAndReplay(*m_context);
         return m_context->endRecording();
     }
 
 private:
     OwnPtr<DisplayItemList> m_displayItemList;
     OwnPtr<GraphicsContext> m_context;
     FloatRect m_bounds;
 };
 
 } // namespace blink
 
 #endif // SkPictureBuilder_h