CCPR: Add workaround for PowerVR crash

Bug: skia:
Change-Id: Icd00f81fda5366813f9c959fdc91b0415894cbfc
Reviewed-on: https://skia-review.googlesource.com/55360
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
diff --git a/gn/tests.gni b/gn/tests.gni
index 34c10b5..a6135ed 100644
--- a/gn/tests.gni
+++ b/gn/tests.gni
@@ -87,6 +87,7 @@
   "$_tests/GpuSampleLocationsTest.cpp",
   "$_tests/GradientTest.cpp",
   "$_tests/GrAllocatorTest.cpp",
+  "$_tests/GrCCPRTest.cpp",
   "$_tests/GrContextAbandonTest.cpp",
   "$_tests/GrContextFactoryTest.cpp",
   "$_tests/GrMemoryPoolTest.cpp",