Replaced PassRefPtr copies with moves in Source/core.

third_party/WebKit/Source/core/dom/DOMSharedArrayBuffer.h

Index: third_party/WebKit/Source/core/dom/DOMSharedArrayBuffer.h
diff --git a/third_party/WebKit/Source/core/dom/DOMSharedArrayBuffer.h b/third_party/WebKit/Source/core/dom/DOMSharedArrayBuffer.h
index 6b057d7a9dd07d5d19c0c75a54a746aa0c369393..91a92d21b3a5c53ca3d70fbc83f9f66bd80ecf35 100644
--- a/third_party/WebKit/Source/core/dom/DOMSharedArrayBuffer.h
+++ b/third_party/WebKit/Source/core/dom/DOMSharedArrayBuffer.h
@@ -17,7 +17,7 @@ public:
     static DOMSharedArrayBuffer* create(PassRefPtr<WTF::ArrayBuffer> buffer)
     {
         DCHECK(buffer->isShared());
-        return new DOMSharedArrayBuffer(buffer);
+        return new DOMSharedArrayBuffer(std::move(buffer));
     }
     static DOMSharedArrayBuffer* create(unsigned numElements, unsigned elementByteSize)
     {
@@ -37,7 +37,7 @@ public:
 
 private:
     explicit DOMSharedArrayBuffer(PassRefPtr<WTF::ArrayBuffer> buffer)
-        : DOMArrayBufferBase(buffer)
+        : DOMArrayBufferBase(std::move(buffer))
     {
     }
 };