cc: Stop converting update rect from int to float to int.

cc/layers/delegated_renderer_layer_impl.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/layers/delegated_renderer_layer_impl.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/containers/hash_tables.h"
 #include "cc/base/math_util.h"
 #include "cc/layers/append_quads_data.h"
 #include "cc/layers/render_pass_sink.h"
 #include "cc/output/delegated_frame_data.h"
 #include "cc/quads/render_pass_draw_quad.h"
 #include "cc/quads/solid_color_draw_quad.h"
 #include "cc/trees/layer_tree_impl.h"
 #include "cc/trees/occlusion.h"
+#include "ui/gfx/geometry/rect_conversions.h"
 
 namespace cc {
 
 DelegatedRendererLayerImpl::DelegatedRendererLayerImpl(LayerTreeImpl* tree_impl,
                                                        int id)
     : LayerImpl(tree_impl, id),
       have_render_passes_to_push_(false),
       inverse_device_scale_factor_(1.0f),
       child_id_(0),
       own_child_id_(false) {
@@ skipping 112 matching lines @@
 
   inverse_device_scale_factor_ = 1.0f / frame_data->device_scale_factor;
   // Display size is already set so we can compute what the damage rect
   // will be in layer space. The damage may exceed the visible portion of
   // the frame, so intersect the damage to the layer's bounds.
   RenderPass* new_root_pass = render_pass_list.back();
   gfx::Size frame_size = new_root_pass->output_rect.size();
   gfx::RectF damage_in_layer = damage_in_frame;
   damage_in_layer.Scale(inverse_device_scale_factor_);
   SetUpdateRect(gfx::IntersectRects(
-      gfx::UnionRects(update_rect(), damage_in_layer), gfx::Rect(bounds())));
+      gfx::UnionRects(update_rect(), gfx::ToEnclosingRect(damage_in_layer)),
+      gfx::Rect(bounds())));
 
   SetRenderPasses(&render_pass_list);
   have_render_passes_to_push_ = true;
 }
 
 void DelegatedRendererLayerImpl::SetRenderPasses(
     RenderPassList* render_passes_in_draw_order) {
   ClearRenderPasses();
 
   for (size_t i = 0; i < render_passes_in_draw_order->size(); ++i) {
@@ skipping 328 matching lines @@
   if (own_child_id_) {
     ResourceProvider* provider = layer_tree_impl()->resource_provider();
     provider->DestroyChild(child_id_);
   }
 
   resources_.clear();
   child_id_ = 0;
 }
 
 }  // namespace cc