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/gl/builders/GrGLProgramBuilder.cpp b/src/gpu/gl/builders/GrGLProgramBuilder.cpp
index c7e8811..60b4b80 100644
--- a/src/gpu/gl/builders/GrGLProgramBuilder.cpp
+++ b/src/gpu/gl/builders/GrGLProgramBuilder.cpp
@@ -185,7 +185,7 @@
 }
 
 GrGLProgram* GrGLProgramBuilder::finalize() {
-    TRACE_EVENT0("skia", TRACE_FUNC);
+    TRACE_EVENT0("skia.gpu", TRACE_FUNC);
 
     // verify we can get a program id
     GrGLuint programID;