Don't call isURLAllowed() from layout.

third_party/WebKit/Source/core/layout/compositing/CompositingReasonFinderTest.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 "core/layout/compositing/CompositingReasonFinder.h"
 
 #include "core/frame/FrameView.h"
 #include "core/layout/LayoutBlock.h"
 #include "core/layout/LayoutTestHelper.h"
 #include "core/paint/PaintLayer.h"
 #include "platform/graphics/GraphicsLayer.h"
 #include "platform/scroll/ScrollTypes.h"
 #include "platform/testing/RuntimeEnabledFeaturesTestHelpers.h"
 
 namespace blink {
 
 class CompositingReasonFinderTest : public RenderingTest {
  public:
   CompositingReasonFinderTest()
-      : RenderingTest(SingleChildFrameLoaderClient::create()) {}
+      : RenderingTest(EmptyFrameLoaderClient::create()) {}

[dcheng, 2016/11/17 08:49:58]

These tests don't actually need iframes, so just default to the empty frame
loader client.

 
  private:
   void SetUp() override {
     RenderingTest::SetUp();
     enableCompositing();
   }
 };
 
 TEST_F(CompositingReasonFinderTest, PromoteOpaqueFixedPosition) {
   ScopedCompositeFixedPositionForTest compositeFixedPosition(true);
@@ skipping 122 matching lines @@
   EXPECT_TRUE(paintLayer->graphicsLayerBacking()->contentsOpaque());
 
   // Make the fixed translucent.
   fixed->setAttribute(HTMLNames::styleAttr, "opacity: 0.5");
   document().view()->updateAllLifecyclePhases();
   paintLayer = toLayoutBoxModelObject(fixed->layoutObject())->layer();
   ASSERT_TRUE(paintLayer);
   EXPECT_EQ(NotComposited, paintLayer->compositingState());
 }
 }