cc: Fix missing compositor invalidations during resize

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 af581ff19ce31521e9e065a01393de47ff14a49a..a52c940767634396090d94e3fb0fc9be72e1bd82 100644
--- a/cc/base/tiling_data.cc
+++ b/cc/base/tiling_data.cc
@@ -138,6 +138,23 @@ int TilingData::LastBorderTileYIndexFromSrcCoord(int src_position) const {
   return std::min(std::max(y, 0), num_tiles_y_ - 1);
 }
 
+gfx::Rect TilingData::ExpandRectToTileBoundsWithBorders(
+    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());
+  int index_bottom = LastBorderTileYIndexFromSrcCoord(rect.bottom());
+
+  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;
+}
+
 gfx::Rect TilingData::TileBounds(int i, int j) const {
   AssertTile(i, j);
   int max_texture_size_x = max_texture_size_.width() - 2 * border_texels_;