Implement the logic to kick off image decoding jobs for TileManager

cc/picture_pile_impl.cc

Index: cc/picture_pile_impl.cc
diff --git a/cc/picture_pile_impl.cc b/cc/picture_pile_impl.cc
index 216643bf84b84b4745d56a2d750351b56ed60e59..5289d434cb8de8d216f6a74ed7f468459b708dfa 100644
--- a/cc/picture_pile_impl.cc
+++ b/cc/picture_pile_impl.cc
@@ -55,4 +55,15 @@ void PicturePileImpl::Raster(SkCanvas* canvas, gfx::Rect rect,
                                          rasterizeBeginTime).InSecondsF();
 }
 
+std::vector<SkPixelRef*> PicturePileImpl::GatherPixelRefs(

[nduca, 2012/12/06 08:46:53]

style nit, should we pass in the vector that we're gathering into? Returning
vectors by value dupes them.

[qinmin, 2012/12/07 05:06:28]

Done.

+    const gfx::Rect& rect) {
+  std::vector<SkPixelRef*> result;
+  for (PicturePile::Pile::const_iterator i = pile_.begin();
+      i != pile_.end(); ++i) {
+    std::vector<SkPixelRef*> pixel_refs = (*i)->GatherPixelRefs(rect);
+    result.insert(result.end(), pixel_refs.begin(), pixel_refs.end());
+  }
+  return result;
+}
+
 }  // namespace cc