Change cc::ElementId to be a uint64_t

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

 // Copyright 2016 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.
 
 #include "modules/canvas/HTMLCanvasElementModule.h"
 
 #include "core/dom/DOMNodeIds.h"
 #include "core/dom/Document.h"
 #include "core/frame/FrameView.h"
 #include "core/html/HTMLCanvasElement.h"
@@ skipping 32 matching lines @@
   // exclude the part that creates surface layer bridge because a mojo message
   // pipe cannot be tested using webkit unit tests.
   return HTMLCanvasElementModule::TransferControlToOffscreenInternal(
       CanvasElement(), exception_state);
 }
 
 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())));
 }
 
 }  // namespace blink