[Android] Suppress overscroll for unscrollable axes in the browser

content/renderer/gpu/render_widget_compositor.cc

 // Copyright (c) 2013 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 "content/renderer/gpu/render_widget_compositor.h"
 
 #include <limits>
 #include <string>
 
 #include "base/command_line.h"
@@ skipping 214 matching lines @@
 
   // For web contents, layer transforms should scale up the contents of layers
   // to keep content always crisp when possible.
   settings.layer_transforms_should_scale_layer_contents = true;
 
   settings.renderer_settings.disable_gpu_vsync =
       cmd->HasSwitch(switches::kDisableGpuVsync);
   settings.main_frame_before_activation_enabled =
       cmd->HasSwitch(cc::switches::kEnableMainFrameBeforeActivation) &&
       !cmd->HasSwitch(cc::switches::kDisableMainFrameBeforeActivation);
-  settings.report_overscroll_only_for_scrollable_axes =
-      !compositor_deps_->IsElasticOverscrollEnabled();
   settings.accelerated_animation_enabled =
       !cmd->HasSwitch(cc::switches::kDisableThreadedAnimation);
   const std::string slimming_group =
       base::FieldTrialList::FindFullName("SlimmingPaint");
   settings.use_display_lists =
       (cmd->HasSwitch(switches::kEnableSlimmingPaint) ||
       !cmd->HasSwitch(switches::kDisableSlimmingPaint)) &&
       (slimming_group != "DisableSlimmingPaint");
   if (cmd->HasSwitch(switches::kEnableCompositorAnimationTimelines)) {
     settings.use_compositor_animation_timelines = true;
@@ skipping 145 matching lines @@
   SynchronousCompositorFactory* synchronous_compositor_factory =
       SynchronousCompositorFactory::GetInstance();
 
   // We can't use GPU rasterization on low-end devices, because the Ganesh
   // cache would consume too much memory.
   if (base::SysInfo::IsLowEndDevice())
     settings.gpu_rasterization_enabled = false;
   settings.using_synchronous_renderer_compositor =
       synchronous_compositor_factory;
   settings.record_full_layer = widget_->DoesRecordFullLayer();
-  settings.report_overscroll_only_for_scrollable_axes =
-      !synchronous_compositor_factory;
   settings.max_partial_texture_updates = 0;
   if (synchronous_compositor_factory) {
     // Android WebView uses system scrollbars, so make ours invisible.
     settings.scrollbar_animator = cc::LayerTreeSettings::NO_ANIMATOR;
     settings.solid_color_scrollbar_color = SK_ColorTRANSPARENT;
   } else {
     settings.scrollbar_animator = cc::LayerTreeSettings::LINEAR_FADE;
     settings.scrollbar_fade_delay_ms = 300;
     settings.scrollbar_fade_resize_delay_ms = 2000;
     settings.scrollbar_fade_duration_ms = 300;
@@ skipping 623 matching lines @@
     return;
   provider->ContextGL()->RateLimitOffscreenContextCHROMIUM();
 }
 
 void RenderWidgetCompositor::SetSurfaceIdNamespace(
     uint32_t surface_id_namespace) {
   layer_tree_host_->set_surface_id_namespace(surface_id_namespace);
 }
 
 }  // namespace content