cc: ImageDecodes: Increase the cache item count limit to 1000.

cc/tiles/software_image_decode_controller.cc

Index: cc/tiles/software_image_decode_controller.cc
diff --git a/cc/tiles/software_image_decode_controller.cc b/cc/tiles/software_image_decode_controller.cc
index 96f5618a48f3d8e79a3b7fe343562e54643bfbf7..93d017f186fa0dd34000ca815ef3f7ff637cdc17 100644
--- a/cc/tiles/software_image_decode_controller.cc
+++ b/cc/tiles/software_image_decode_controller.cc
@@ -30,7 +30,7 @@ const size_t kMaxHighQualityImageSizeBytes = 64 * 1024 * 1024;
 
 // The number of entries to keep around in the cache. This limit can be breached
 // if more items are locked. That is, locked items ignore this limit.
-const size_t kMaxItemsInCache = 100;
+const size_t kMaxItemsInCache = 1000;
 
 class AutoRemoveKeyFromTaskMap {
  public: