Scale the ALPHA_THRESHOLD filter's region based on the device scale factor.

cc/quads/render_pass_unittest.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/quads/render_pass.h"
 
 #include "cc/base/math_util.h"
 #include "cc/base/scoped_ptr_vector.h"
 #include "cc/output/copy_output_request.h"
 #include "cc/quads/checkerboard_draw_quad.h"
@@ skipping 210 matching lines @@
   scoped_ptr<RenderPassDrawQuad> pass_quad = RenderPassDrawQuad::Create();
   pass_quad->SetNew(pass->shared_quad_state_list.back(),
                     contrib_output_rect,
                     contrib_output_rect,
                     contrib_id,
                     false,  // is_replica
                     0,      // mask_resource_id
                     contrib_damage_rect,
                     gfx::RectF(),  // mask_uv_rect
                     FilterOperations(),
-                    FilterOperations());
+                    FilterOperations(),
+                    gfx::Vector2dF(1.f, 1.f));
   pass->quad_list.push_back(pass_quad.PassAs<DrawQuad>());
 
   pass_list.push_back(pass.PassAs<RenderPass>());
   pass_list.push_back(contrib.PassAs<RenderPass>());
 
   // Make a copy with CopyAll().
   RenderPassList copy_list;
   RenderPass::CopyAll(pass_list, &copy_list);
 
   CompareRenderPassLists(pass_list, copy_list);
@@ skipping 80 matching lines @@
 
   // Make a copy with CopyAll().
   RenderPassList copy_list;
   RenderPass::CopyAll(pass_list, &copy_list);
 
   CompareRenderPassLists(pass_list, copy_list);
 }
 
 }  // namespace
 }  // namespace cc