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

chrome/test/base/tracing_browsertest.cc

 // Copyright (c) 2012 The Chromium 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 "chrome/test/base/tracing.h"
 
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
@@ skipping 11 matching lines @@
 #include "content/public/test/browser_test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 
 using base::trace_event::MemoryDumpManager;
 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
   // event in RenderFrameImpl::OnJavaScriptExecuteRequestForTests (from the
   // renderer process).
   void ExecuteJavascriptOnCurrentTab() {
     content::RenderViewHost* rvh = browser()->tab_strip_model()->
         GetActiveWebContents()->GetRenderViewHost();
     ASSERT_TRUE(rvh);
     ASSERT_TRUE(content::ExecuteScript(rvh, ";"));
@@ skipping 31 matching lines @@
     std::string json_events;
     ASSERT_TRUE(EndTracing(&json_events));
 
     // Expect the basic memory dumps to be present in the trace.
     EXPECT_NE(std::string::npos, json_events.find("process_totals"));
     EXPECT_NE(std::string::npos, json_events.find("v8"));
     EXPECT_NE(std::string::npos, json_events.find("blink_gc"));
   }
 };
 
-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::
           GetTraceConfig_PeriodicTriggers(250, 2000)));
 }
 
 IN_PROC_BROWSER_TEST_F(TracingBrowserTest, TestBackgroundMemoryInfra) {
   PerformDumpMemoryTestActions(base::trace_event::TraceConfig(
       base::trace_event::TraceConfigMemoryTestUtil::
           GetTraceConfig_BackgroundTrigger(200)));
 }
 
 }  // namespace