Further plumb visual rect into cc:DisplayItemList.

ui/compositor/paint_recorder.cc

Index: ui/compositor/paint_recorder.cc
diff --git a/ui/compositor/paint_recorder.cc b/ui/compositor/paint_recorder.cc
index 45b6f35efdc0a81413e8edd52bc48572dd61ac70..36729acd789f8271e5b83a0637f5664b477e1f97 100644
--- a/ui/compositor/paint_recorder.cc
+++ b/ui/compositor/paint_recorder.cc
@@ -9,6 +9,7 @@
 #include "third_party/skia/include/core/SkPictureRecorder.h"
 #include "ui/compositor/paint_cache.h"
 #include "ui/compositor/paint_context.h"
+#include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/skia_util.h"
 
 namespace ui {
@@ -24,7 +25,8 @@ PaintRecorder::PaintRecorder(const PaintContext& context,
                                  gfx::RectToSkRect(gfx::Rect(recording_size))))
                   .get(),
               context.device_scale_factor_),
-      cache_(cache) {
+      cache_(cache),
+      visual_rect_(context.ToVisualRect(recording_size)) {

[danakj, 2015/11/06 00:32:45]

ditto, store the recording_size instead?

[wkorman, 2015/11/16 19:01:03]

Same as above, can explore subsequently.

 #if DCHECK_IS_ON()
   DCHECK(!context.inside_paint_recorder_);
   context.inside_paint_recorder_ = true;
@@ -41,10 +43,11 @@ PaintRecorder::~PaintRecorder() {
   context_.inside_paint_recorder_ = false;
 #endif
 
-  auto* item = context_.list_->CreateAndAppendItem<cc::DrawingDisplayItem>();
+  auto* item =
+      context_.list_->CreateAndAppendItem<cc::DrawingDisplayItem>(visual_rect_);
   item->SetNew(skia::AdoptRef(context_.recorder_->endRecordingAsPicture()));
   if (cache_)
-    cache_->SetCache(item);
+    cache_->SetCache(visual_rect_, item);
 }
 
 }  // namespace ui