cc: Enable use of render surfaces for Android WebView

cc/trees/layer_tree_impl.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_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 969 matching lines @@
   render_surface_layer_list_.clear();
 
   if (layer_list_.empty())
     return false;
 
   {
     base::ElapsedTimer timer;
     TRACE_EVENT2(
         "cc", "LayerTreeImpl::UpdateDrawProperties::CalculateDrawProperties",
         "IsActive", IsActiveTree(), "SourceFrameNumber", source_frame_number_);
-    bool can_render_to_separate_surface =
-        (!is_in_resourceless_software_draw_mode());
+    // TODO(crbug.com/692780): Remove this option entirely once this get to
+    // stable and proves it works.
+    bool can_render_to_separate_surface = true;
 
     // We verify visible rect calculations whenever we verify clip tree
     // calculations except when this function is explicitly passed a flag asking
     // us to skip it.
     bool verify_visible_rect_calculations =
         force_skip_verify_visible_rect_calculations
             ? false
             : settings().verify_clip_tree_calculations;
     LayerTreeHostCommon::CalcDrawPropsImplInputs inputs(
         layer_list_[0], DrawViewportSize(),
@@ skipping 1091 matching lines @@
 
 void LayerTreeImpl::ResetAllChangeTracking() {
   layers_that_should_push_properties_.clear();
   // Iterate over all layers, including masks.
   for (auto& layer : *layers_)
     layer->ResetChangeTracking();
   property_trees_.ResetAllChangeTracking();
 }
 
 }  // namespace cc