Push inverse device scale factor in DRLI->DRLI pushes

cc/layers/delegated_renderer_layer_impl_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/layers/delegated_renderer_layer_impl.h"
 
 #include "cc/base/scoped_ptr_vector.h"
 #include "cc/layers/solid_color_layer_impl.h"
 #include "cc/quads/render_pass_draw_quad.h"
 #include "cc/quads/solid_color_draw_quad.h"
@@ skipping 1505 matching lines @@
       EXPECT_EQ(1u, partially_occluded_count);
       // The quad in the contributing surface is at (211,300) in the root.
       // The occlusion extends to 500 in the x-axis, pushing the left of the
       // visible part of the quad to 500 - 211 = 300 - 11 inside the quad.
       EXPECT_EQ(gfx::Rect(300 - 11, 0, 100 + 11, 500).ToString(),
                 impl.quad_list()[0]->visible_rect.ToString());
     }
   }
 }
 
+TEST_F(DelegatedRendererLayerImplTest, PushPropertiesTo) {
+  gfx::Size layer_size(1000, 1000);
+
+  scoped_ptr<FakeDelegatedRendererLayerImpl> delegated_renderer_layer_impl =
+      FakeDelegatedRendererLayerImpl::Create(host_impl_->active_tree(), 5);
+  delegated_renderer_layer_impl->SetBounds(layer_size);
+  delegated_renderer_layer_impl->SetContentBounds(layer_size);
+  delegated_renderer_layer_impl->SetDrawsContent(true);
+
+  RenderPassList delegated_render_passes;
+  // |pass1| covers the whole layer.
+  RenderPass::Id pass1_id = RenderPass::Id(5, 0);
+  AddRenderPass(&delegated_render_passes,
+                pass1_id,
+                gfx::Rect(layer_size),
+                gfx::Transform());
+  delegated_renderer_layer_impl->SetFrameDataForRenderPasses(
+      2.f, &delegated_render_passes);
+  DCHECK_EQ(0.5f, delegated_renderer_layer_impl->inverse_device_scale_factor());

[danakj, 2014/07/09 21:12:57]

EXPECT_EQ

+
+  scoped_ptr<DelegatedRendererLayerImpl> other_layer =
+      DelegatedRendererLayerImpl::Create(host_impl_->active_tree(), 6);
+
+  delegated_renderer_layer_impl->PushPropertiesTo(other_layer.get());
+
+  DCHECK_EQ(0.5f, other_layer->inverse_device_scale_factor());

[danakj, 2014/07/09 21:12:57]

EXPECT_EQ

+}
+
 }  // namespace
 }  // namespace cc