Revert of cc: Replace recorded region with direct map lookup

cc/resources/picture_pile.cc

Index: cc/resources/picture_pile.cc
diff --git a/cc/resources/picture_pile.cc b/cc/resources/picture_pile.cc
index abd18f69bc312c8530decfcef737c1624132314c..43b13c577941531cebac25736e7ba2003c5b1e93 100644
--- a/cc/resources/picture_pile.cc
+++ b/cc/resources/picture_pile.cc
@@ -164,8 +164,6 @@
       -kPixelDistanceToRecord,
       -kPixelDistanceToRecord,
       -kPixelDistanceToRecord);
-  recorded_viewport_ = interest_rect;
-  recorded_viewport_.Intersect(gfx::Rect(size()));
 
   bool invalidated = false;
   for (Region::Iterator i(invalidation); i.has_rect(); i.next()) {
@@ -207,8 +205,11 @@
   std::vector<gfx::Rect> record_rects;
   ClusterTiles(invalid_tiles, &record_rects);
 
-  if (record_rects.empty())
+  if (record_rects.empty()) {
+    if (invalidated)
+      UpdateRecordedRegion();
     return invalidated;
+  }
 
   for (std::vector<gfx::Rect>::iterator it = record_rects.begin();
        it != record_rects.end();
@@ -244,7 +245,6 @@
       stats_instrumentation->AddRecord(best_duration, recorded_pixel_count);
     }
 
-    bool found_tile_for_recorded_picture = false;
     for (TilingData::Iterator it(&tiling_, record_rect);
         it; ++it) {
       const PictureMapKey& key = it.index();
@@ -252,13 +252,11 @@
       if (record_rect.Contains(tile)) {
         PictureInfo& info = picture_map_[key];
         info.SetPicture(picture);
-        found_tile_for_recorded_picture = true;
       }
     }
-    DCHECK(found_tile_for_recorded_picture);
-  }
-
-  has_any_recordings_ = true;
+  }
+
+  UpdateRecordedRegion();
   return true;
 }