Revert to old rect conversion behavior

content/renderer/render_widget.cc

 // Copyright (c) 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 "content/renderer/render_widget.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
@@ skipping 968 matching lines @@
     // Only update the part of the plugin that actually changed.
     optimized_copy_rect.Intersect(bounds);
     pending_update_params_->bitmap = dib->id();
     pending_update_params_->bitmap_rect = optimized_copy_location;
     pending_update_params_->copy_rects.push_back(optimized_copy_rect);
     pending_update_params_->scale_factor = dib_scale_factor;
   } else if (!is_accelerated_compositing_active_) {
     // Compute a buffer for painting and cache it.
     gfx::RectF scaled_bounds = bounds;
     scaled_bounds.Scale(device_scale_factor_);
-    gfx::Rect pixel_bounds = gfx::ToEnclosingRect(scaled_bounds);
+    gfx::Rect pixel_bounds =
+        gfx::ToFlooredRectDeprecated(scaled_bounds);
     scoped_ptr<skia::PlatformCanvas> canvas(
         RenderProcess::current()->GetDrawingCanvas(&current_paint_buf_,
                                                    pixel_bounds));
     if (!canvas.get()) {
       NOTREACHED();
       return;
     }
 
     // We may get back a smaller canvas than we asked for.
     // TODO(darin): This seems like it could cause painting problems!
@@ skipping 902 matching lines @@
 
 bool RenderWidget::WillHandleMouseEvent(const WebKit::WebMouseEvent& event) {
   return false;
 }
 
 bool RenderWidget::WebWidgetHandlesCompositorScheduling() const {
   return false;
 }
 
 }  // namespace content