Fix trace event categories in src/gpu ("skia"->"skia.gpu")

Change-Id: I74b041d3f820d423601bd06805edec001a0d980e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/225256
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
Auto-Submit: Brian Salomon <bsalomon@google.com>
diff --git a/src/gpu/GrClipStackClip.cpp b/src/gpu/GrClipStackClip.cpp
index 30f86da..4bcc4fb 100644
--- a/src/gpu/GrClipStackClip.cpp
+++ b/src/gpu/GrClipStackClip.cpp
@@ -509,7 +509,7 @@
         auto uploader = skstd::make_unique<GrTDeferredProxyUploader<ClipMaskData>>(reducedClip);
         GrTDeferredProxyUploader<ClipMaskData>* uploaderRaw = uploader.get();
         auto drawAndUploadMask = [uploaderRaw, maskSpaceIBounds] {
-            TRACE_EVENT0("skia", "Threaded SW Clip Mask Render");
+            TRACE_EVENT0("skia.gpu", "Threaded SW Clip Mask Render");
             GrSWMaskHelper helper(uploaderRaw->getPixels());
             if (helper.init(maskSpaceIBounds)) {
                 draw_clip_elements_to_mask_helper(helper, uploaderRaw->data().elements(),