Change cc::ElementId to be a uint64_t

third_party/WebKit/Source/modules/canvas/HTMLCanvasElementModuleTest.cpp

Index: third_party/WebKit/Source/modules/canvas/HTMLCanvasElementModuleTest.cpp
diff --git a/third_party/WebKit/Source/modules/canvas/HTMLCanvasElementModuleTest.cpp b/third_party/WebKit/Source/modules/canvas/HTMLCanvasElementModuleTest.cpp
index 50ab0381c8a361505a5b4ac9d0e3daa449f80d59..9a004d5b4497457fba50721489bf8ab6d760eb5f 100644
--- a/third_party/WebKit/Source/modules/canvas/HTMLCanvasElementModuleTest.cpp
+++ b/third_party/WebKit/Source/modules/canvas/HTMLCanvasElementModuleTest.cpp
@@ -50,7 +50,7 @@ TEST_F(HTMLCanvasElementModuleTest, TransferControlToOffscreen) {
   NonThrowableExceptionState exception_state;
   OffscreenCanvas* offscreen_canvas =
       TransferControlToOffscreen(exception_state);
-  int canvas_id = offscreen_canvas->PlaceholderCanvasId();
+  DOMNodeId canvas_id = offscreen_canvas->PlaceholderCanvasId();
   EXPECT_EQ(canvas_id, DOMNodeIds::IdForNode(&(CanvasElement())));
 }