Revert of cc: Fix size_t to int truncations in layers/ output/ playback/ quads/

cc/layers/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/layer_impl.h"
 
 #include "base/json/json_reader.h"
-#include "base/numerics/safe_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "base/trace_event/trace_event.h"
 #include "base/trace_event/trace_event_argument.h"
 #include "cc/animation/animation_registrar.h"
 #include "cc/animation/scrollbar_animation_controller.h"
 #include "cc/base/math_util.h"
 #include "cc/base/simple_enclosed_region.h"
 #include "cc/debug/debug_colors.h"
 #include "cc/debug/layer_tree_debug_state.h"
 #include "cc/debug/micro_benchmark_impl.h"
@@ skipping 1490 matching lines @@
       LayerTypeAsString(),
       this);
   state->SetInteger("layer_id", id());
   MathUtil::AddToTracedValue("bounds", bounds_, state);
 
   state->SetDouble("opacity", opacity());
 
   MathUtil::AddToTracedValue("position", position_, state);
 
   state->SetInteger("draws_content", DrawsContent());
-  state->SetInteger("gpu_memory_usage",
-                    base::saturated_cast<int>(GPUMemoryUsageInBytes()));
+  state->SetInteger("gpu_memory_usage", GPUMemoryUsageInBytes());
 
   MathUtil::AddToTracedValue(
       "scroll_offset", scroll_offset_ ? scroll_offset_->Current(IsActive())
                                       : gfx::ScrollOffset(),
       state);
 
   MathUtil::AddToTracedValue("transform_origin", transform_origin_, state);
 
   bool clipped;
   gfx::QuadF layer_quad = MathUtil::MapQuad(
@@ skipping 146 matching lines @@
   gfx::Transform scaled_draw_transform =
       draw_properties_.target_space_transform;
   scaled_draw_transform.Scale(SK_MScalar1 / scale, SK_MScalar1 / scale);
   gfx::Size scaled_content_bounds =
       gfx::ToCeiledSize(gfx::ScaleSize(content_bounds(), scale));
   return MathUtil::MapEnclosingClippedRect(scaled_draw_transform,
                                            gfx::Rect(scaled_content_bounds));
 }
 
 }  // namespace cc