Delete blink code for scroll-blocks-on

Source/platform/graphics/CompositingReasons.h

 // 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.
 
 #ifndef CompositingReasons_h
 #define CompositingReasons_h
 
 #include "platform/PlatformExport.h"
 #include "wtf/MathExtras.h"
 #include <stdint.h>
@@ skipping 11 matching lines @@
 const uint64_t CompositingReasonIFrame                                   = UINT64_C(1) << 4;
 const uint64_t CompositingReasonBackfaceVisibilityHidden                 = UINT64_C(1) << 5;
 const uint64_t CompositingReasonActiveAnimation                          = UINT64_C(1) << 6;
 const uint64_t CompositingReasonTransitionProperty                       = UINT64_C(1) << 7;
 const uint64_t CompositingReasonPositionFixed                            = UINT64_C(1) << 8;
 const uint64_t CompositingReasonOverflowScrollingTouch                   = UINT64_C(1) << 9;
 const uint64_t CompositingReasonOverflowScrollingParent                  = UINT64_C(1) << 10;
 const uint64_t CompositingReasonOutOfFlowClipping                        = UINT64_C(1) << 11;
 const uint64_t CompositingReasonVideoOverlay                             = UINT64_C(1) << 12;
 const uint64_t CompositingReasonWillChangeCompositingHint                = UINT64_C(1) << 13;
-const uint64_t CompositingReasonScrollBlocksOn                           = UINT64_C(1) << 14;

[dtapuska, 2015/08/11 17:15:11]

When reasons have been removed in the past; the entire enum is reordered so
there is no gap. 

[Rick Byers, 2015/08/12 02:20:29]

Ah yes, thanks.  Done.

 
 // Overlap reasons that require knowing what's behind you in paint-order before knowing the answer
 const uint64_t CompositingReasonAssumedOverlap                           = UINT64_C(1) << 15;
 const uint64_t CompositingReasonOverlap                                  = UINT64_C(1) << 16;
 const uint64_t CompositingReasonNegativeZIndexChildren                   = UINT64_C(1) << 17;
 const uint64_t CompositingReasonScrollsWithRespectToSquashingLayer       = UINT64_C(1) << 18;
 const uint64_t CompositingReasonSquashingSparsityExceeded                = UINT64_C(1) << 19;
 const uint64_t CompositingReasonSquashingClippingContainerMismatch       = UINT64_C(1) << 20;
 const uint64_t CompositingReasonSquashingOpacityAncestorMismatch         = UINT64_C(1) << 21;
 const uint64_t CompositingReasonSquashingTransformAncestorMismatch       = UINT64_C(1) << 22;
@@ skipping 57 matching lines @@
     | CompositingReasonIFrame
     | CompositingReasonBackfaceVisibilityHidden
     | CompositingReasonActiveAnimation
     | CompositingReasonTransitionProperty
     | CompositingReasonPositionFixed
     | CompositingReasonOverflowScrollingTouch
     | CompositingReasonOverflowScrollingParent
     | CompositingReasonOutOfFlowClipping
     | CompositingReasonVideoOverlay
     | CompositingReasonWillChangeCompositingHint
-    | CompositingReasonScrollBlocksOn
     | CompositingReasonCompositorProxy;
 
 const uint64_t CompositingReasonComboAllDirectStyleDeterminedReasons =
     CompositingReason3DTransform
     | CompositingReasonBackfaceVisibilityHidden
     | CompositingReasonActiveAnimation
     | CompositingReasonTransitionProperty
     | CompositingReasonWillChangeCompositingHint
-    | CompositingReasonScrollBlocksOn
     | CompositingReasonCompositorProxy;
 
 const uint64_t CompositingReasonComboCompositedDescendants =
     CompositingReasonTransformWithCompositedDescendants
     | CompositingReasonIsolateCompositedDescendants
     | CompositingReasonOpacityWithCompositedDescendants
     | CompositingReasonMaskWithCompositedDescendants
     | CompositingReasonFilterWithCompositedDescendants
     | CompositingReasonBlendingWithCompositedDescendants
     | CompositingReasonReflectionWithCompositedDescendants
@@ skipping 60 matching lines @@
     const char* shortName;
     const char* description;
 };
 
 PLATFORM_EXPORT extern const CompositingReasonStringMap kCompositingReasonStringMap[];
 PLATFORM_EXPORT extern size_t kNumberOfCompositingReasons;
 
 } // namespace blink
 
 #endif // CompositingReasons_h