Throttle rendering pipeline for invisible iframes

Source/core/paint/DisplayItemListPaintTest.h

 // Copyright 2015 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.
 
 #ifndef DisplayItemListPaintTest_h
 #define DisplayItemListPaintTest_h
 
 #include "core/frame/FrameView.h"
 #include "core/layout/LayoutTestHelper.h"
 #include "core/layout/LayoutView.h"
@@ skipping 26 matching lines @@
     DisplayItemListPaintTestForSlimmingPaintV2()
         : m_originalSlimmingPaintV2Enabled(RuntimeEnabledFeatures::slimmingPaintV2Enabled()) { }
 
 protected:
     LayoutView& layoutView() { return *document().layoutView(); }
     DisplayItemList& rootDisplayItemList() { return *layoutView().layer()->graphicsLayerBacking()->displayItemList(); }
 
     // Expose some document lifecycle steps for checking new display items before commiting.
     void updateLifecyclePhasesToPaintForSlimmingPaintV2Clean(const LayoutRect& interestRect = LayoutRect::infiniteRect())
     {
-        document().view()->updateLifecyclePhasesInternal(FrameView::OnlyUpToCompositingCleanPlusScrolling);
+        document().view()->updateLifecyclePhasesInternal(FrameView::OnlyUpToCompositingCleanPlusScrolling, DocumentLifecycle::ThrottlingMode::Disallow);
         document().view()->invalidateTreeIfNeededRecursive();
         document().view()->paintForSlimmingPaintV2(interestRect);
     }
     void compositeForSlimmingPaintV2() { document().view()->compositeForSlimmingPaintV2(); }
 
 private:
     void SetUp() override
     {
         RuntimeEnabledFeatures::setSlimmingPaintV2Enabled(true);
 
@@ skipping 36 matching lines @@
         for (size_t index = 0; index < std::min<size_t>(actual.size(), expectedSize); index++) { \
             TRACE_DISPLAY_ITEMS(index, expected[index], actual[index]); \
             EXPECT_EQ(expected[index].client(), actual[index].client()); \
             EXPECT_EQ(expected[index].type(), actual[index].type()); \
         } \
     } while (false);
 
 } // namespace blink
 
 #endif // DisplayItemListPaintTest_h