Move squash preventing reasons out of compositing reasons

third_party/WebKit/Source/platform/graphics/SquashingDisallowedReasons.h

+// 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.
+
+#ifndef SquashingDisallowedReasons_h
+#define SquashingDisallowedReasons_h
+
+#include "platform/PlatformExport.h"
+#include "wtf/Allocator.h"
+#include <stdint.h>
+
+namespace blink {
+
+const uint64_t SquashingDisallowedReasonsNone = 0;
+
+const uint64_t SquashingDisallowedReasonScrollsWithRespectToSquashingLayer       = UINT64_C(1) << 0;
+const uint64_t SquashingDisallowedReasonSquashingSparsityExceeded                = UINT64_C(1) << 1;
+const uint64_t SquashingDisallowedReasonClippingContainerMismatch                = UINT64_C(1) << 2;
+const uint64_t SquashingDisallowedReasonOpacityAncestorMismatch                  = UINT64_C(1) << 3;
+const uint64_t SquashingDisallowedReasonTransformAncestorMismatch                = UINT64_C(1) << 4;
+const uint64_t SquashingDisallowedReasonFilterMismatch                           = UINT64_C(1) << 5;
+const uint64_t SquashingDisallowedReasonWouldBreakPaintOrder                     = UINT64_C(1) << 6;
+const uint64_t SquashingDisallowedReasonSquashingVideoIsDisallowed               = UINT64_C(1) << 7;
+const uint64_t SquashingDisallowedReasonSquashedLayerClipsCompositingDescendants = UINT64_C(1) << 8;
+const uint64_t SquashingDisallowedReasonSquashingLayoutPartIsDisallowed          = UINT64_C(1) << 9;
+const uint64_t SquashingDisallowedReasonSquashingReflectionIsDisallowed          = UINT64_C(1) << 10;
+const uint64_t SquashingDisallowedReasonSquashingBlendingIsDisallowed            = UINT64_C(1) << 11;
+const uint64_t SquashingDisallowedReasonNearestFixedPositionMismatch             = UINT64_C(1) << 12;
+const uint64_t SquashingDisallowedReasonScrollChildWithCompositedDescendants     = UINT64_C(1) << 13;
+const uint64_t SquashingDisallowedReasonSquashingLayerIsAnimating                = UINT64_C(1) << 14;
+
+typedef uint64_t SquashingDisallowedReasons;
+
+struct SquashingDisallowedReasonStringMap {
+    STACK_ALLOCATED();
+    SquashingDisallowedReasons reason;
+    const char* shortName;
+    const char* description;
+};
+
+PLATFORM_EXPORT extern const SquashingDisallowedReasonStringMap kSquashingDisallowedReasonStringMap[];
+PLATFORM_EXPORT extern const size_t kNumberOfSquashingDisallowedReasons;
+
+} // namespace blink
+
+#endif // SquashingDisallowedReasons_h