Fix ChromeOS compilation after r321565

content/renderer/devtools/v8_sampling_profiler.cc

 // Copyright 2014 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 "content/renderer/devtools/v8_sampling_profiler.h"
 
 #if defined(OS_POSIX)
 #include <signal.h>
 #define USE_SIGNALS
 #endif
@@ skipping 427 matching lines @@
 // static
 void V8SamplingThread::HandleProfilerSignal(int signal,
                                             siginfo_t* info,
                                             void* context) {
   if (signal != SIGPROF)
     return;
   ucontext_t* ucontext = reinterpret_cast<ucontext_t*>(context);
   mcontext_t& mcontext = ucontext->uc_mcontext;
   v8::RegisterState state;
 
-#if defined(OS_ANDROID)
-  // TODO(alph): Add support for Android
+#if defined(OS_ANDROID) || defined(OS_CHROMEOS)
+  // TODO(alph): Add support for Android and ChromeOS
   ALLOW_UNUSED_LOCAL(mcontext);
 
 #elif defined(OS_MACOSX)
 #if ARCH_CPU_64_BITS
   state.pc = reinterpret_cast<void*>(mcontext->__ss.__rip);
   state.sp = reinterpret_cast<void*>(mcontext->__ss.__rsp);
   state.fp = reinterpret_cast<void*>(mcontext->__ss.__rbp);
 #elif ARCH_CPU_32_BITS
   state.pc = reinterpret_cast<void*>(mcontext->__ss.__eip);
   state.sp = reinterpret_cast<void*>(mcontext->__ss.__esp);
@@ skipping 78 matching lines @@
 
 void V8SamplingProfiler::EnableSamplingEventForTesting() {
   waitable_event_for_testing_.reset(new base::WaitableEvent(false, false));
 }
 
 void V8SamplingProfiler::WaitSamplingEventForTesting() {
   waitable_event_for_testing_->Wait();
 }
 
 }  // namespace blink