Move squash preventing reasons out of compositing reasons

third_party/WebKit/Source/platform/graphics/CompositingReasons.cpp

 // Copyright 2014 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 "platform/graphics/CompositingReasons.h"
 
 #include "wtf/StdLibExtras.h"
 
 namespace blink {
 
@@ skipping 51 matching lines @@
         "Has a CompositorProxy object" },
     { CompositingReasonAssumedOverlap,
         "assumedOverlap",
         "Might overlap other composited content" },
     { CompositingReasonOverlap,
         "overlap",
         "Overlaps other composited content" },
     { CompositingReasonNegativeZIndexChildren,
         "negativeZIndexChildren",
         "Parent with composited negative z-index content" },
-    { CompositingReasonScrollsWithRespectToSquashingLayer,
-        "scrollsWithRespectToSquashingLayer",
-        "Cannot be squashed since this layer scrolls with respect to the squashing layer" },
-    { CompositingReasonSquashingSparsityExceeded,
-        "squashingSparsityExceeded",
-        "Cannot be squashed as the squashing layer would become too sparse" },
-    { CompositingReasonSquashingClippingContainerMismatch,
-        "squashingClippingContainerMismatch",
-        "Cannot be squashed because this layer has a different clipping container than the squashing layer" },
-    { CompositingReasonSquashingOpacityAncestorMismatch,
-        "squashingOpacityAncestorMismatch",
-        "Cannot be squashed because this layer has a different opacity ancestor than the squashing layer" },
-    { CompositingReasonSquashingTransformAncestorMismatch,
-        "squashingTransformAncestorMismatch",
-        "Cannot be squashed because this layer has a different transform ancestor than the squashing layer" },
-    { CompositingReasonSquashingFilterMismatch,
-        "squashingFilterAncestorMismatch",
-        "Cannot be squashed because this layer has a different filter ancestor than the squashing layer, or this layer has a filter" },
-    { CompositingReasonSquashingWouldBreakPaintOrder,
-        "squashingWouldBreakPaintOrder",
-        "Cannot be squashed without breaking paint order" },
-    { CompositingReasonSquashingVideoIsDisallowed,
-        "squashingVideoIsDisallowed",
-        "Squashing video is not supported" },
-    { CompositingReasonSquashedLayerClipsCompositingDescendants,
-        "squashedLayerClipsCompositingDescendants",
-        "Squashing a layer that clips composited descendants is not supported." },
-    { CompositingReasonSquashingLayoutPartIsDisallowed,
-        "squashingLayoutPartIsDisallowed",
-        "Squashing a frame, iframe or plugin is not supported." },
-    { CompositingReasonSquashingReflectionIsDisallowed,
-        "squashingReflectionDisallowed",
-        "Squashing a element with a reflection is not supported." },
-    { CompositingReasonSquashingBlendingIsDisallowed,
-        "squashingBlendingDisallowed",
-        "Squashing a layer with blending is not supported." },
-    { CompositingReasonSquashingNearestFixedPositionMismatch,
-        "squashingNearestFixedPositionMismatch",
-        "Cannot be squashed because this layer has a different nearest fixed position layer than the squashing layer" },
-    { CompositingReasonScrollChildWithCompositedDescendants,
-        "scrollChildWithCompositedDescendants",
-        "Squashing a scroll child with composited descendants is not supported." },
-    { CompositingReasonSquashingLayerIsAnimating,
-        "squashingLayerIsAnimating",
-        "Cannot squash into a layer that is animating." },
+    { CompositingReasonSquashingDisallowed,
+        "squashingDisallowed",
+        "Layer was separately composited because it could not be squashed." },
     { CompositingReasonTransformWithCompositedDescendants,
         "transformWithCompositedDescendants",
         "Has a transform that needs to be known by compositor because of composited descendants" },
     { CompositingReasonOpacityWithCompositedDescendants,
         "opacityWithCompositedDescendants",
         "Has opacity that needs to be applied by compositor because of composited descendants" },
     { CompositingReasonMaskWithCompositedDescendants,
         "maskWithCompositedDescendants",
         "Has a mask that needs to be known by compositor because of composited descendants" },
     { CompositingReasonReflectionWithCompositedDescendants,
@@ skipping 75 matching lines @@
         "layerForScrollingBlockSelection",
         "Secondary layer, to house block selection gaps for composited scrolling with no scrolling contents" },
     { CompositingReasonInlineTransform,
         "inlineTransform",
         "Has an inline transform, which causes subsequent layers to assume overlap" },
 };
 
 const size_t kNumberOfCompositingReasons = WTF_ARRAY_LENGTH(kCompositingReasonStringMap);
 
 } // namespace blink