SK_API in src/gpu cleanup

Change-Id: I14d6f7ef06c3cfcefd0813dd5013e4185b12d8cc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/235804
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
diff --git a/src/gpu/GrDDLContext.cpp b/src/gpu/GrDDLContext.cpp
index 27a8667..4cfdad4 100644
--- a/src/gpu/GrDDLContext.cpp
+++ b/src/gpu/GrDDLContext.cpp
@@ -15,7 +15,7 @@
  * The DDL Context is the one in effect during DDL Recording. It isn't backed by a GrGPU and
  * cannot allocate any GPU resources.
  */
-class SK_API GrDDLContext : public GrContext {
+class GrDDLContext : public GrContext {
 public:
     GrDDLContext(sk_sp<GrContextThreadSafeProxy> proxy)
             : INHERITED(proxy->backend(), proxy->priv().options(), proxy->priv().contextID()) {