Stops using ConvertRectToPixel in snapshot_aura.

ui/snapshot/snapshot_aura_unittest.cc

Index: ui/snapshot/snapshot_aura_unittest.cc
diff --git a/ui/snapshot/snapshot_aura_unittest.cc b/ui/snapshot/snapshot_aura_unittest.cc
index f8a2a94f2cf479d1b9406f544f9951a49e95f4b0..5fe05a840f8940eaa228afb29c8dcdff2a8f7661 100644
--- a/ui/snapshot/snapshot_aura_unittest.cc
+++ b/ui/snapshot/snapshot_aura_unittest.cc
@@ -126,12 +126,14 @@ class SnapshotAuraTest : public testing::Test {
 
   gfx::Image GrabSnapshotForTestWindow() {
     gfx::Rect source_rect(test_window_->bounds().size());
+    aura::Window::ConvertRectToTarget(
+        test_window(), root_window(), &source_rect);
 
     scoped_refptr<base::TestSimpleTaskRunner> task_runner(
         new base::TestSimpleTaskRunner());
     scoped_refptr<SnapshotHolder> holder(new SnapshotHolder);
     ui::GrabWindowSnapshotAsync(
-        test_window(),
+        root_window(),
         source_rect,
         task_runner,
         base::Bind(&SnapshotHolder::SnapshotCallback, holder));