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

cc/layers/delegated_renderer_layer_impl_unittest.cc

Index: cc/layers/delegated_renderer_layer_impl_unittest.cc
diff --git a/cc/layers/delegated_renderer_layer_impl_unittest.cc b/cc/layers/delegated_renderer_layer_impl_unittest.cc
index 30eecc48faa20719d3be8e67d92a620d11ff59e4..394dcc510221015fb5f43fbd23e6a0a93175f869 100644
--- a/cc/layers/delegated_renderer_layer_impl_unittest.cc
+++ b/cc/layers/delegated_renderer_layer_impl_unittest.cc
@@ -575,15 +575,16 @@ class DelegatedRendererLayerImplTestTransform
         pass->CreateAndAppendDrawQuad<RenderPassDrawQuad>();
     render_pass_quad->SetNew(
         shared_quad_state,
-        gfx::Rect(5, 5, 7, 7),  // quad_rect
-        gfx::Rect(5, 5, 7, 7),  // visible_rect
-        RenderPass::Id(10, 7),  // render_pass_id
-        false,                  // is_replica
-        0,                      // mask_resource_id
-        child_pass_rect,        // contents_changed_since_last_frame
-        gfx::RectF(),           // mask_uv_rect
-        FilterOperations(),     // filters
-        FilterOperations());    // background_filters
+        gfx::Rect(5, 5, 7, 7),      // quad_rect
+        gfx::Rect(5, 5, 7, 7),      // visible_rect
+        RenderPass::Id(10, 7),      // render_pass_id
+        false,                      // is_replica
+        0,                          // mask_resource_id
+        child_pass_rect,            // contents_changed_since_last_frame
+        gfx::RectF(),               // mask_uv_rect
+        FilterOperations(),         // filters
+        FilterOperations(),         // background_filters
+        gfx::Vector2dF(1.f, 1.f));  // scale
 
     SolidColorDrawQuad* color_quad;
     color_quad = pass->CreateAndAppendDrawQuad<SolidColorDrawQuad>();
@@ -1011,15 +1012,16 @@ class DelegatedRendererLayerImplTestClip
         pass->CreateAndAppendDrawQuad<RenderPassDrawQuad>();
     render_pass_quad->SetNew(
         shared_quad_state,
-        gfx::Rect(5, 5, 7, 7),  // quad_rect
-        gfx::Rect(5, 5, 7, 7),  // visible_quad_rect
-        RenderPass::Id(10, 7),  // render_pass_id
-        false,                  // is_replica
-        0,                      // mask_resource_id
-        child_pass_rect,        // contents_changed_since_last_frame
-        gfx::RectF(),           // mask_uv_rect
-        FilterOperations(),     // filters
-        FilterOperations());    // background_filters
+        gfx::Rect(5, 5, 7, 7),      // quad_rect
+        gfx::Rect(5, 5, 7, 7),      // visible_quad_rect
+        RenderPass::Id(10, 7),      // render_pass_id
+        false,                      // is_replica
+        0,                          // mask_resource_id
+        child_pass_rect,            // contents_changed_since_last_frame
+        gfx::RectF(),               // mask_uv_rect
+        FilterOperations(),         // filters
+        FilterOperations(),         // background_filters
+        gfx::Vector2dF(1.f, 1.f));  // scale
 
     SolidColorDrawQuad* color_quad;
     color_quad = pass->CreateAndAppendDrawQuad<SolidColorDrawQuad>();