Revert of ResizeObserver pt6: integration

third_party/WebKit/Source/core/frame/FrameView.cpp

Index: third_party/WebKit/Source/core/frame/FrameView.cpp
diff --git a/third_party/WebKit/Source/core/frame/FrameView.cpp b/third_party/WebKit/Source/core/frame/FrameView.cpp
index ee6f99f6ae3a7ea976f7288d75437e82d43ca01e..002fc8d1ec0aae8670224e90f8ff3dbf3c913059 100644
--- a/third_party/WebKit/Source/core/frame/FrameView.cpp
+++ b/third_party/WebKit/Source/core/frame/FrameView.cpp
@@ -38,7 +38,6 @@
 #include "core/editing/FrameSelection.h"
 #include "core/editing/RenderedPosition.h"
 #include "core/editing/markers/DocumentMarkerController.h"
-#include "core/events/ErrorEvent.h"
 #include "core/fetch/ResourceFetcher.h"
 #include "core/frame/EventHandlerRegistry.h"
 #include "core/frame/FrameHost.h"
@@ -76,7 +75,6 @@
 #include "core/loader/DocumentLoader.h"
 #include "core/loader/FrameLoader.h"
 #include "core/loader/FrameLoaderClient.h"
-#include "core/observer/ResizeObserverController.h"
 #include "core/page/AutoscrollController.h"
 #include "core/page/ChromeClient.h"
 #include "core/page/FocusController.h"
@@ -2511,36 +2509,6 @@
     // Otherwise the paint invalidation will be handled in paint invalidation phase of this cycle.
 }
 
-void FrameView::notifyResizeObservers()
-{
-    // Controller exists only if ResizeObserver was created.
-    if (!frame().document()->resizeObserverController())
-        return;
-
-    ResizeObserverController& resizeController = m_frame->document()->ensureResizeObserverController();
-
-    DCHECK(lifecycle().state() >= DocumentLifecycle::LayoutClean);
-
-    size_t minDepth = 0;
-    for (minDepth = resizeController.gatherObservations(0);
-        minDepth != ResizeObserverController::kDepthBottom;
-        minDepth = resizeController.gatherObservations(minDepth)) {
-        resizeController.deliverObservations();
-        frame().document()->updateStyleAndLayout();
-    }
-
-    if (resizeController.skippedObservations()) {
-        resizeController.clearObservations();
-        ErrorEvent * error = ErrorEvent::create("ResizeObserver loop limit exceeded", SourceLocation::capture(m_frame->document()), nullptr);
-        m_frame->document()->reportException(error, NotSharableCrossOrigin);
-        // Ensure notifications will get delivered in next cycle.
-        if (FrameView* frameView = m_frame->view())
-            frameView->scheduleAnimation();
-    }
-
-    DCHECK(!layoutView()->needsLayout());
-}
-
 // TODO(leviw): We don't assert lifecycle information from documents in child PluginViews.
 void FrameView::updateLifecyclePhasesInternal(DocumentLifecycle::LifecycleState targetState)
 {
@@ -2570,12 +2538,6 @@
     if (targetState == DocumentLifecycle::LayoutClean) {
         updateViewportIntersectionsForSubtree(targetState);
         return;
-    }
-
-    if (targetState == DocumentLifecycle::PaintClean) {
-        forAllNonThrottledFrameViews([](FrameView& frameView) {
-            frameView.notifyResizeObservers();
-        });
     }
 
     if (LayoutViewItem view = layoutViewItem()) {