Surface resource cache through cmdline flag

This lets us test out the memory-fallback code in the new
ops task reordering pathway on our bots.

Bug: skia:10877
Change-Id: Ic5662ef68e46b144eb2821687390c858d0056ba1
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/396157
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Adlai Holler <adlai@google.com>
diff --git a/src/gpu/GrDirectContext.cpp b/src/gpu/GrDirectContext.cpp
index 4b0a867..6435e7e 100644
--- a/src/gpu/GrDirectContext.cpp
+++ b/src/gpu/GrDirectContext.cpp
@@ -65,6 +65,11 @@
 GrDirectContext::GrDirectContext(GrBackendApi backend, const GrContextOptions& options)
         : INHERITED(GrContextThreadSafeProxyPriv::Make(backend, options), false)
         , fDirectContextID(DirectContextID::Next()) {
+#if GR_TEST_UTILS
+    if (options.fResourceCacheLimitOverride != -1) {
+        this->setResourceCacheLimit(options.fResourceCacheLimitOverride);
+    }
+#endif
 }
 
 GrDirectContext::~GrDirectContext() {