Purge the ScrollBlocksOn code.

cc/layers/layer_unittest.cc

 // Copyright 2011 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 "cc/layers/layer.h"
 
 #include <stddef.h>
 
 #include "base/thread_task_runner_handle.h"
 #include "cc/animation/animation_host.h"
@@ skipping 124 matching lines @@
     EXPECT_EQ(src->main_thread_scrolling_reasons_,
               dest->main_thread_scrolling_reasons_);
     EXPECT_EQ(src->have_wheel_event_handlers_,
               dest->have_wheel_event_handlers_);
     EXPECT_EQ(src->have_scroll_event_handlers_,
               dest->have_scroll_event_handlers_);
     EXPECT_EQ(src->non_fast_scrollable_region_,
               dest->non_fast_scrollable_region_);
     EXPECT_EQ(src->touch_event_handler_region_,
               dest->touch_event_handler_region_);
-    EXPECT_EQ(src->scroll_blocks_on_, dest->scroll_blocks_on_);
     EXPECT_EQ(src->contents_opaque_, dest->contents_opaque_);
     EXPECT_EQ(src->opacity_, dest->opacity_);
     EXPECT_EQ(src->blend_mode_, dest->blend_mode_);
     EXPECT_EQ(src->is_root_for_isolated_group_,
               dest->is_root_for_isolated_group_);
     EXPECT_EQ(src->position_, dest->position_);
     EXPECT_EQ(src->is_container_for_fixed_position_layers_,
               dest->is_container_for_fixed_position_layers_);
     EXPECT_EQ(src->position_constraint_, dest->position_constraint_);
     EXPECT_EQ(src->should_flatten_transform_, dest->should_flatten_transform_);
@@ skipping 93 matching lines @@
     layer->draws_content_ = true;
     layer->hide_layer_and_subtree_ = false;
     layer->has_render_surface_ = false;
     layer->masks_to_bounds_ = true;
     layer->main_thread_scrolling_reasons_ =
         MainThreadScrollingReason::kNotScrollingOnMain;
     layer->have_wheel_event_handlers_ = true;
     layer->have_scroll_event_handlers_ = false;
     layer->non_fast_scrollable_region_ = Region(gfx::Rect(5, 1, 14, 3));
     layer->touch_event_handler_region_ = Region(gfx::Rect(3, 14, 1, 5));
-    layer->scroll_blocks_on_ = SCROLL_BLOCKS_ON_NONE;
     layer->contents_opaque_ = true;
     layer->opacity_ = 1.f;
     layer->blend_mode_ = SkXfermode::kSrcOver_Mode;
     layer->is_root_for_isolated_group_ = true;
     layer->position_ = gfx::PointF(3.14f, 6.28f);
     layer->is_container_for_fixed_position_layers_ = true;
     LayerPositionConstraint pos_con;
     pos_con.set_is_fixed_to_bottom_edge(true);
     layer->position_constraint_ = pos_con;
     layer->should_flatten_transform_ = true;
@@ skipping 30 matching lines @@
     layer->draws_content_ = !layer->draws_content_;
     layer->hide_layer_and_subtree_ = !layer->hide_layer_and_subtree_;
     layer->has_render_surface_ = !layer->has_render_surface_;
     layer->masks_to_bounds_ = !layer->masks_to_bounds_;
     layer->main_thread_scrolling_reasons_ =
         MainThreadScrollingReason::kHasBackgroundAttachmentFixedObjects;
     layer->have_wheel_event_handlers_ = !layer->have_wheel_event_handlers_;
     layer->have_scroll_event_handlers_ = !layer->have_scroll_event_handlers_;
     layer->non_fast_scrollable_region_ = Region(gfx::Rect(5, 1, 14, 3));
     layer->touch_event_handler_region_ = Region(gfx::Rect(3, 14, 1, 5));
-    layer->scroll_blocks_on_ = SCROLL_BLOCKS_ON_WHEEL_EVENT;
     layer->contents_opaque_ = !layer->contents_opaque_;
     layer->opacity_ = 3.14f;
     layer->blend_mode_ = SkXfermode::kSrcIn_Mode;
     layer->is_root_for_isolated_group_ = !layer->is_root_for_isolated_group_;
     layer->position_ = gfx::PointF(3.14f, 6.28f);
     layer->is_container_for_fixed_position_layers_ =
         !layer->is_container_for_fixed_position_layers_;
     LayerPositionConstraint pos_con;
     pos_con.set_is_fixed_to_bottom_edge(true);
     layer->position_constraint_ = pos_con;
@@ skipping 1810 matching lines @@
   EXPECT_EQ(MutableProperty::kNone, impl_layer->mutable_properties());
 
   test_layer->PushPropertiesTo(impl_layer.get());
 
   EXPECT_EQ(2lu, impl_layer->element_id());
   EXPECT_EQ(MutableProperty::kTransform, impl_layer->mutable_properties());
 }
 
 }  // namespace
 }  // namespace cc