Remove will-change: contents GPU rasterization hint

Source/core/rendering/compositing/CompositingReasonFinder.cpp

Index: Source/core/rendering/compositing/CompositingReasonFinder.cpp
diff --git a/Source/core/rendering/compositing/CompositingReasonFinder.cpp b/Source/core/rendering/compositing/CompositingReasonFinder.cpp
index f17e456aeff758b00c422431cb195c2b78d80afe..7f70685f76594236af54271b1dd576d08f6a65e7 100644
--- a/Source/core/rendering/compositing/CompositingReasonFinder.cpp
+++ b/Source/core/rendering/compositing/CompositingReasonFinder.cpp
@@ -51,8 +51,6 @@ void CompositingReasonFinder::updateTriggers()
         m_compositingTriggers |= ScrollableInnerFrameTrigger;
     if (settings.acceleratedCompositingForFiltersEnabled())
         m_compositingTriggers |= FilterTrigger;
-    if (settings.acceleratedCompositingForGpuRasterizationHintEnabled())
-        m_compositingTriggers |= GPURasterizationTrigger;
 
     // We map both these settings to universal overlow scrolling.
     // FIXME: Replace these settings with a generic compositing setting for HighDPI.
@@ -84,19 +82,6 @@ bool CompositingReasonFinder::isMainFrame() const
     return !m_renderView.document().ownerElement();
 }
 
-CompositingReasons CompositingReasonFinder::suppressWillChangeAndAnimationForGpuRasterization(const RenderLayer* layer, CompositingReasons styleReasons) const
-{
-    CompositingReasons adjustedReasons = styleReasons;
-    adjustedReasons &= ~(CompositingReasonWillChangeCompositingHint | CompositingReasonWillChangeGpuRasterizationHint);
-
-    // We can suppress layer creation for animations before animations start, but not
-    // once they're already running on the compositor.
-    if (!layer->renderer()->style()->isRunningAnimationOnCompositor())
-        adjustedReasons &= ~CompositingReasonActiveAnimation;
-
-    return adjustedReasons;
-}
-
 CompositingReasons CompositingReasonFinder::directReasons(const RenderLayer* layer, bool* needToRecomputeCompositingRequirements) const
 {
     CompositingReasons styleReasons = layer->styleDeterminedCompositingReasons();
@@ -138,9 +123,6 @@ CompositingReasons CompositingReasonFinder::styleDeterminedReasons(RenderObject*
     if (requiresCompositingForWillChangeCompositingHint(renderer))
         directReasons |= CompositingReasonWillChangeCompositingHint;
 
-    if (requiresCompositingForWillChangeGpuRasterizationHint(renderer))
-        directReasons |= CompositingReasonWillChangeGpuRasterizationHint;
-
     ASSERT(!(directReasons & ~CompositingReasonComboAllStyleDeterminedReasons));
     return directReasons;
 }
@@ -170,14 +152,6 @@ bool CompositingReasonFinder::requiresCompositingForWillChangeCompositingHint(co
     return renderer->style()->hasWillChangeCompositingHint();
 }
 
-bool CompositingReasonFinder::requiresCompositingForWillChangeGpuRasterizationHint(const RenderObject* renderer) const
-{
-    if (!(m_compositingTriggers & GPURasterizationTrigger))
-        return false;
-
-    return renderer->style()->hasWillChangeGpuRasterizationHint();
-}
-
 CompositingReasons CompositingReasonFinder::nonStyleDeterminedDirectReasons(const RenderLayer* layer, bool* needToRecomputeCompositingRequirements) const
 {
     CompositingReasons directReasons = CompositingReasonNone;