Replaced cc::SurfaceId::nonce_ with base::UnguessableToken

third_party/WebKit/Source/core/offscreencanvas/OffscreenCanvas.h

Index: third_party/WebKit/Source/core/offscreencanvas/OffscreenCanvas.h
diff --git a/third_party/WebKit/Source/core/offscreencanvas/OffscreenCanvas.h b/third_party/WebKit/Source/core/offscreencanvas/OffscreenCanvas.h
index daed80bf5373099eb07835f69930683af230b787..fb8499c4bf38b723eef90ddda43028e77953e5d5 100644
--- a/third_party/WebKit/Source/core/offscreencanvas/OffscreenCanvas.h
+++ b/third_party/WebKit/Source/core/offscreencanvas/OffscreenCanvas.h
@@ -53,15 +53,17 @@ public:
 
     OffscreenCanvasFrameDispatcher* getOrCreateFrameDispatcher();
 
-    void setSurfaceId(uint32_t clientId, uint32_t localId, uint64_t nonce)
+    void setSurfaceId(uint32_t clientId, uint32_t localId, uint64_t nonceHigh, uint64_t nonceLow)
     {
         m_clientId = clientId;
         m_localId = localId;
-        m_nonce = nonce;
+        m_nonceHigh = nonceHigh;
+        m_nonceLow = nonceLow;
     }
     uint32_t clientId() const { return m_clientId; }
     uint32_t localId() const { return m_localId; }
-    uint64_t nonce() const { return m_nonce; }
+    uint64_t nonceHigh() const { return m_nonceHigh; }
+    uint64_t nonceLow() const { return m_nonceLow; }
 
     // CanvasImageSource implementation
     PassRefPtr<Image> getSourceImageForCanvas(SourceImageStatus*, AccelerationHint, SnapshotReason, const FloatSize&) const final;
@@ -99,7 +101,8 @@ private:
     // then the following members would remain as initialized zero values.
     uint32_t m_clientId = 0;
     uint32_t m_localId = 0;
-    uint64_t m_nonce = 0;
+    uint64_t m_nonceHigh = 0;
+    uint64_t m_nonceLow = 0;
 };
 
 } // namespace blink