Remove implicit flooring Scale() method from Point and Size.

content/renderer/render_widget.cc

Index: content/renderer/render_widget.cc
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index a2edba1fbfb6dc03e10843bb7fb6549d7701565f..406b53181c3ddd9c32fd442ff1de60a44ec3aa7c 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -38,6 +38,7 @@
 #include "ui/gfx/point.h"
 #include "ui/gfx/rect_conversions.h"
 #include "ui/gfx/size.h"
+#include "ui/gfx/size_conversions.h"
 #include "ui/gfx/skia_util.h"
 #include "ui/gl/gl_switches.h"
 #include "ui/surface/transport_dib.h"
@@ -1494,8 +1495,10 @@ void RenderWidget::OnMsgPaintAtSize(const TransportDIB::Handle& dib_handle,
   scoped_ptr<TransportDIB> paint_at_size_buffer(
       TransportDIB::CreateWithHandle(dib_handle));
 
-  gfx::Size page_size_in_pixel = page_size.Scale(device_scale_factor_);
-  gfx::Size desired_size_in_pixel = desired_size.Scale(device_scale_factor_);
+  gfx::Size page_size_in_pixel = gfx::ToFlooredSize(
+      page_size.Scale(device_scale_factor_));
+  gfx::Size desired_size_in_pixel = gfx::ToFlooredSize(
+      desired_size.Scale(device_scale_factor_));
   gfx::Size canvas_size = page_size_in_pixel;
   float x_scale = static_cast<float>(desired_size_in_pixel.width()) /
                   static_cast<float>(canvas_size.width());