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

cc/output/direct_renderer.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/output/direct_renderer.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/containers/hash_tables.h"
 #include "base/containers/scoped_ptr_hash_map.h"
 #include "base/metrics/histogram.h"
+#include "base/numerics/safe_conversions.h"
 #include "base/trace_event/trace_event.h"
 #include "cc/base/math_util.h"
 #include "cc/output/bsp_tree.h"
 #include "cc/output/bsp_walk_action.h"
 #include "cc/output/copy_output_request.h"
 #include "cc/quads/draw_quad.h"
 #include "ui/gfx/geometry/rect_conversions.h"
 #include "ui/gfx/transform.h"
 
 static gfx::Transform OrthoProjectionMatrix(float left,
@@ skipping 163 matching lines @@
     }
   }
 }
 
 void DirectRenderer::DrawFrame(RenderPassList* render_passes_in_draw_order,
                                float device_scale_factor,
                                const gfx::Rect& device_viewport_rect,
                                const gfx::Rect& device_clip_rect,
                                bool disable_picture_quad_image_filtering) {
   TRACE_EVENT0("cc", "DirectRenderer::DrawFrame");
-  UMA_HISTOGRAM_COUNTS("Renderer4.renderPassCount",
-                       render_passes_in_draw_order->size());
+  UMA_HISTOGRAM_COUNTS(
+      "Renderer4.renderPassCount",
+      base::sautrated_cast<int>(render_passes_in_draw_order->size()));
 
   const RenderPass* root_render_pass = render_passes_in_draw_order->back();
   DCHECK(root_render_pass);
 
   DrawingFrame frame;
   frame.render_passes_in_draw_order = render_passes_in_draw_order;
   frame.root_render_pass = root_render_pass;
   frame.root_damage_rect = Capabilities().using_partial_swap
                                ? root_render_pass->damage_rect
                                : root_render_pass->output_rect;
@@ skipping 310 matching lines @@
   ScopedResource* texture = render_pass_textures_.get(id);
   return texture && texture->id();
 }
 
 // static
 gfx::Size DirectRenderer::RenderPassTextureSize(const RenderPass* render_pass) {
   return render_pass->output_rect.size();
 }
 
 }  // namespace cc