Purge the ScrollBlocksOn code.

cc/trees/layer_tree_host_unittest_scroll.cc

 // Copyright 2012 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/trees/layer_tree_host.h"
 
 #include "base/location.h"
 #include "base/memory/weak_ptr.h"
 #include "base/single_thread_task_runner.h"
 #include "base/thread_task_runner_handle.h"
@@ skipping 1019 matching lines @@
   void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
     LayerImpl* root = impl->active_tree()->root_layer();
     LayerImpl* scroll_layer = impl->OuterViewportScrollLayer();
     scroll_layer->SetScrollClipLayer(root->children()[0]->id());
 
     // Set max_scroll_offset = (100, 100).
     scroll_layer->SetBounds(
         gfx::Size(root->bounds().width() + 100, root->bounds().height() + 100));
 
     InputHandler::ScrollStatus status = scroll_layer->TryScroll(
-        gfx::PointF(0.0f, 1.0f), InputHandler::GESTURE, SCROLL_BLOCKS_ON_NONE);
+        gfx::PointF(0.0f, 1.0f), InputHandler::GESTURE);
 
     EXPECT_EQ(InputHandler::SCROLL_ON_IMPL_THREAD, status.thread);
     EXPECT_EQ(MainThreadScrollingReason::kNotScrollingOnMain,
               status.main_thread_scrolling_reasons);
 
     // Set max_scroll_offset = (0, 0).
     scroll_layer->SetBounds(root->bounds());
     status = scroll_layer->TryScroll(
-        gfx::PointF(0.0f, 1.0f), InputHandler::GESTURE, SCROLL_BLOCKS_ON_NONE);
+        gfx::PointF(0.0f, 1.0f), InputHandler::GESTURE);
     EXPECT_EQ(InputHandler::SCROLL_IGNORED, status.thread);
     EXPECT_EQ(MainThreadScrollingReason::kNotScrollable,
               status.main_thread_scrolling_reasons);
 
     // Set max_scroll_offset = (-100, -100).
     scroll_layer->SetBounds(gfx::Size());
     status = scroll_layer->TryScroll(
-        gfx::PointF(0.0f, 1.0f), InputHandler::GESTURE, SCROLL_BLOCKS_ON_NONE);
+        gfx::PointF(0.0f, 1.0f), InputHandler::GESTURE);
     EXPECT_EQ(InputHandler::SCROLL_IGNORED, status.thread);
     EXPECT_EQ(MainThreadScrollingReason::kNotScrollable,
               status.main_thread_scrolling_reasons);
 
     EndTest();
   }
 
   void AfterTest() override {}
 };
 
@@ skipping 18 matching lines @@
   }
 
   void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
     LayerImpl* scroll_layer = impl->OuterViewportScrollLayer();
 
     // Verify that the scroll layer's scroll offset is taken into account when
     // checking whether the screen space point is inside the non-fast
     // scrollable region.
 
     InputHandler::ScrollStatus status = scroll_layer->TryScroll(
-        gfx::PointF(1.f, 1.f), InputHandler::GESTURE, SCROLL_BLOCKS_ON_NONE);
+        gfx::PointF(1.f, 1.f), InputHandler::GESTURE);
     EXPECT_EQ(InputHandler::SCROLL_ON_MAIN_THREAD, status.thread);
     EXPECT_EQ(MainThreadScrollingReason::kNonFastScrollableRegion,
               status.main_thread_scrolling_reasons);
 
     status = scroll_layer->TryScroll(
-        gfx::PointF(21.f, 21.f), InputHandler::GESTURE, SCROLL_BLOCKS_ON_NONE);
+        gfx::PointF(21.f, 21.f), InputHandler::GESTURE);
     EXPECT_EQ(InputHandler::SCROLL_ON_IMPL_THREAD, status.thread);
     EXPECT_EQ(MainThreadScrollingReason::kNotScrollingOnMain,
               status.main_thread_scrolling_reasons);
 
     EndTest();
   }
 
   void AfterTest() override {}
 };
 
@@ skipping 184 matching lines @@
   RunTest(CompositorMode::Threaded, false);
 }
 
 TEST_F(LayerTreeHostScrollTestLayerStructureChange, ScrollDestroyWholeTree) {
   scroll_destroy_whole_tree_ = true;
   RunTest(CompositorMode::Threaded, false);
 }
 
 }  // namespace
 }  // namespace cc