cc: Expand invalidation to full tile when recording is missing for the tile.

cc/base/tiling_data.cc

Index: cc/base/tiling_data.cc
diff --git a/cc/base/tiling_data.cc b/cc/base/tiling_data.cc
index a52c940767634396090d94e3fb0fc9be72e1bd82..66d4b7551e2af21c5dd18b8e36bc562479882133 100644
--- a/cc/base/tiling_data.cc
+++ b/cc/base/tiling_data.cc
@@ -139,7 +139,7 @@ int TilingData::LastBorderTileYIndexFromSrcCoord(int src_position) const {
 }
 
 gfx::Rect TilingData::ExpandRectToTileBoundsWithBorders(
-    const gfx::Rect rect) const {
+    const gfx::Rect& rect) const {

[enne (OOO), 2014/06/17 00:02:54]

OOPS.  Thanks!

   if (!rect.Intersects(tiling_rect_) || has_empty_bounds())
     return gfx::Rect();
   int index_x = FirstBorderTileXIndexFromSrcCoord(rect.x());
@@ -150,9 +150,21 @@ gfx::Rect TilingData::ExpandRectToTileBoundsWithBorders(
   gfx::Rect rect_top_left(TileBoundsWithBorder(index_x, index_y));
   gfx::Rect rect_bottom_right(TileBoundsWithBorder(index_right, index_bottom));
 
-  gfx::Rect expanded(rect_top_left);
-  expanded.Union(rect_bottom_right);
-  return expanded;
+  return gfx::UnionRects(rect_top_left, rect_bottom_right);
+}
+
+gfx::Rect TilingData::ExpandRectToTileBounds(const gfx::Rect& rect) const {
+  if (!rect.Intersects(tiling_rect_) || has_empty_bounds())
+    return gfx::Rect();
+  int index_x = FirstBorderTileXIndexFromSrcCoord(rect.x());
+  int index_y = FirstBorderTileYIndexFromSrcCoord(rect.y());
+  int index_right = LastBorderTileXIndexFromSrcCoord(rect.right());

[enne (OOO), 2014/06/17 00:02:54]

What happened to your "I need a -1 here" thought?

[danakj, 2014/06/17 18:51:34]

Was going to fix both in a separate CL, but I've got a test now, so I've
included it.

+  int index_bottom = LastBorderTileYIndexFromSrcCoord(rect.bottom());
+
+  gfx::Rect rect_top_left(TileBounds(index_x, index_y));
+  gfx::Rect rect_bottom_right(TileBounds(index_right, index_bottom));
+
+  return gfx::UnionRects(rect_top_left, rect_bottom_right);
 }
 
 gfx::Rect TilingData::TileBounds(int i, int j) const {