Fix //third_party/cec to not disable -Wunused-function.

chrome/test/base/tracing_browsertest.cc

Index: chrome/test/base/tracing_browsertest.cc
diff --git a/chrome/test/base/tracing_browsertest.cc b/chrome/test/base/tracing_browsertest.cc
index dae376699ff55b8b0adc7ba14e407fa2b18d5776..010df8803ee165df515eed61ae9207638c75866f 100644
--- a/chrome/test/base/tracing_browsertest.cc
+++ b/chrome/test/base/tracing_browsertest.cc
@@ -29,9 +29,6 @@ using base::trace_event::MemoryDumpType;
 using tracing::BeginTracingWithTraceConfig;
 using tracing::EndTracing;
 
-const char g_category[] = "test_tracing";
-const char g_event[] = "TheEvent";
-
 class TracingBrowserTest : public InProcessBrowserTest {
  protected:
   // Execute some no-op javascript on the current tab - this triggers a trace
@@ -83,11 +80,6 @@ class TracingBrowserTest : public InProcessBrowserTest {
   }
 };
 
-void AddEvents(int num) {
-  for (int i = 0; i < num; ++i)
-    TRACE_EVENT_INSTANT0(g_category, g_event, TRACE_EVENT_SCOPE_THREAD);
-}
-
 IN_PROC_BROWSER_TEST_F(TracingBrowserTest, TestMemoryInfra) {
   PerformDumpMemoryTestActions(base::trace_event::TraceConfig(
       base::trace_event::TraceConfigMemoryTestUtil::