Fixing tile grid size used by cc:Picture to make it respect current tile configuration

cc/picture_pile_base.cc

Index: cc/picture_pile_base.cc
diff --git a/cc/picture_pile_base.cc b/cc/picture_pile_base.cc
index 94983847afcc63ff943c57bb82b547c3a160243e..09134d518cee22e313ccb5eccc83e2c1c96c0c37 100644
--- a/cc/picture_pile_base.cc
+++ b/cc/picture_pile_base.cc
@@ -10,6 +10,7 @@ namespace {
 // Dimensions of the tiles in this picture pile as well as the dimensions of
 // the base picture in each tile.
 const int kBasePictureSize = 3000;
+const int kDefaultTileGridStride = 254;
 }
 
 namespace cc {
@@ -17,6 +18,7 @@ namespace cc {
 PicturePileBase::PicturePileBase()
     : min_contents_scale_(0) {
   tiling_.SetMaxTextureSize(gfx::Size(kBasePictureSize, kBasePictureSize));
+  tile_grid_stride_.SetSize(kDefaultTileGridStride, kDefaultTileGridStride);
 }
 
 PicturePileBase::~PicturePileBase() {
@@ -67,6 +69,12 @@ void PicturePileBase::SetMinContentsScale(float min_contents_scale) {
   min_contents_scale_ = min_contents_scale;
 }
 
+void PicturePileBase::SetTileGridStride(gfx::Size tile_grid_stride) {
+    DCHECK(tile_grid_stride.width() > 0);
+    DCHECK(tile_grid_stride.height() > 0);
+    tile_grid_stride_ = tile_grid_stride;
+}
+
 void PicturePileBase::SetBufferPixels(int new_buffer_pixels) {
   if (new_buffer_pixels == buffer_pixels())
     return;
@@ -84,6 +92,7 @@ void PicturePileBase::PushPropertiesTo(PicturePileBase* other) {
   other->tiling_ = tiling_;
   other->recorded_region_ = recorded_region_;
   other->min_contents_scale_ = min_contents_scale_;
+  other->tile_grid_stride_ = tile_grid_stride_;
 }
 
 void PicturePileBase::UpdateRecordedRegion() {