[Tracing] Support multi-categories group list.

test/cctest/libplatform/test-tracing.cc

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 #include <limits>
 
 #include "include/libplatform/v8-tracing.h"
 #include "src/tracing/trace-event.h"
 #include "test/cctest/cctest.h"
 
 namespace v8 {
 namespace platform {
 namespace tracing {
 
 TEST(TestTraceConfig) {
   LocalContext env;
   TraceConfig* trace_config = new TraceConfig();
   trace_config->AddIncludedCategory("v8");
   trace_config->AddIncludedCategory(TRACE_DISABLED_BY_DEFAULT("v8.runtime"));
 
   CHECK_EQ(trace_config->IsSystraceEnabled(), false);
   CHECK_EQ(trace_config->IsArgumentFilterEnabled(), false);
   CHECK_EQ(trace_config->IsCategoryGroupEnabled("v8"), true);
   CHECK_EQ(trace_config->IsCategoryGroupEnabled("v8.cpu_profile"), false);
   CHECK_EQ(trace_config->IsCategoryGroupEnabled("v8.cpu_profile.hires"), false);
   CHECK_EQ(trace_config->IsCategoryGroupEnabled(
                TRACE_DISABLED_BY_DEFAULT("v8.runtime")),
            true);
+  CHECK_EQ(trace_config->IsCategoryGroupEnabled("v8,v8.cpu_profile"), true);
+  CHECK_EQ(
+      trace_config->IsCategoryGroupEnabled("v8,disabled-by-default-v8.runtime"),
+      true);
+  CHECK_EQ(trace_config->IsCategoryGroupEnabled(
+               "v8_cpu_profile,v8.cpu_profile.hires"),
+           false);
+
   delete trace_config;
 }
 
 TEST(TestTraceObject) {
   TraceObject trace_object;
   uint8_t category_enabled_flag = 41;
   trace_object.Initialize('X', &category_enabled_flag, "Test.Trace",
                           "Test.Scope", 42, 123, 0, nullptr, nullptr, nullptr,
                           nullptr, 0);
   CHECK_EQ('X', trace_object.phase());
@@ skipping 360 matching lines @@
 
   CHECK_EQ(1, observer.enabled_count);
   CHECK_EQ(1, observer.disabled_count);
 
   i::V8::SetPlatformForTesting(old_platform);
 }
 
 }  // namespace tracing
 }  // namespace platform
 }  // namespace v8