[Android] Suppress overscroll for unscrollable axes in the browser

cc/trees/layer_tree_host_impl_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/trees/layer_tree_host_impl.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/bind.h"
@@ skipping 83 matching lines @@
         did_request_prepare_tiles_(false),
         did_complete_page_scale_animation_(false),
         reduce_memory_result_(true) {
     media::InitializeMediaLibrary();
   }
 
   LayerTreeSettings DefaultSettings() {
     LayerTreeSettings settings;
     settings.minimum_occlusion_tracking_size = gfx::Size();
     settings.renderer_settings.texture_id_allocation_chunk_size = 1;
-    settings.report_overscroll_only_for_scrollable_axes = true;
     settings.gpu_rasterization_enabled = true;
     return settings;
   }
 
   void SetUp() override {
     CreateHostImpl(DefaultSettings(), CreateOutputSurface());
   }
 
   void TearDown() override {}
 
@@ skipping 4514 matching lines @@
 
   // Even though the layer can't scroll the overscroll still happens.
   EXPECT_EQ(InputHandler::SCROLL_STARTED,
             host_impl_->ScrollBegin(gfx::Point(), InputHandler::WHEEL));
   scroll_result = host_impl_->ScrollBy(gfx::Point(), gfx::Vector2d(0, 10));
   EXPECT_FALSE(scroll_result.did_scroll);
   EXPECT_TRUE(scroll_result.did_overscroll_root);
   EXPECT_EQ(gfx::Vector2dF(0, 10), host_impl_->accumulated_root_overscroll());
 }
 
-TEST_F(LayerTreeHostImplTest, NoOverscrollOnFractionalDeviceScale) {
-  InputHandlerScrollResult scroll_result;
-  gfx::Size surface_size(980, 1439);
-  gfx::Size content_size(980, 1438);
-  float device_scale_factor = 1.5f;
-  scoped_ptr<LayerImpl> root_clip =
-      LayerImpl::Create(host_impl_->active_tree(), 3);
-  root_clip->SetHasRenderSurface(true);
-
-  scoped_ptr<LayerImpl> root =
-      CreateScrollableLayer(1, content_size, root_clip.get());
-  root->SetIsContainerForFixedPositionLayers(true);
-  scoped_ptr<LayerImpl> child =
-      CreateScrollableLayer(2, content_size, root_clip.get());
-  root->scroll_clip_layer()->SetBounds(gfx::Size(320, 469));
-  host_impl_->active_tree()->PushPageScaleFromMainThread(0.326531f, 0.326531f,
-                                                         5.f);
-  host_impl_->SetPageScaleOnActiveTree(0.326531f);
-  child->SetScrollClipLayer(Layer::INVALID_ID);
-  root->AddChild(child.Pass());
-  root_clip->AddChild(root.Pass());
-
-  host_impl_->SetViewportSize(surface_size);
-  host_impl_->SetDeviceScaleFactor(device_scale_factor);
-  host_impl_->active_tree()->SetRootLayer(root_clip.Pass());
-  host_impl_->active_tree()->SetViewportLayersFromIds(Layer::INVALID_ID, 3, 1,
-                                                      Layer::INVALID_ID);
-  host_impl_->active_tree()->DidBecomeActive();
-  DrawFrame();
-  {
-    // Horizontal & Vertical GlowEffect should not be applied when
-    // content size is less then view port size. For Example Horizontal &
-    // vertical GlowEffect should not be applied in about:blank page.
-    EXPECT_EQ(InputHandler::SCROLL_STARTED,
-              host_impl_->ScrollBegin(gfx::Point(0, 0), InputHandler::WHEEL));
-    scroll_result = host_impl_->ScrollBy(gfx::Point(), gfx::Vector2dF(0, -1));
-    EXPECT_FALSE(scroll_result.did_scroll);
-    EXPECT_FALSE(scroll_result.did_overscroll_root);
-    EXPECT_EQ(gfx::Vector2dF().ToString(),
-              host_impl_->accumulated_root_overscroll().ToString());
-
-    host_impl_->ScrollEnd();
-  }
-}
-
 TEST_F(LayerTreeHostImplTest, NoOverscrollWhenNotAtEdge) {
   InputHandlerScrollResult scroll_result;
   gfx::Size surface_size(100, 100);
   gfx::Size content_size(200, 200);
   scoped_ptr<LayerImpl> root_clip =
       LayerImpl::Create(host_impl_->active_tree(), 3);
   root_clip->SetHasRenderSurface(true);
 
   scoped_ptr<LayerImpl> root =
       CreateScrollableLayer(1, content_size, root_clip.get());
@@ skipping 3499 matching lines @@
   // Hold an unowned pointer to the output surface to use for mock expectations.
   MockReclaimResourcesOutputSurface* mock_output_surface = output_surface.get();
 
   CreateHostImpl(DefaultSettings(), output_surface.Pass());
   EXPECT_CALL(*mock_output_surface, ForceReclaimResources()).Times(1);
   host_impl_->BeginCommit();
 }
 
 }  // namespace
 }  // namespace cc