C++ profiler: publish the new API, make compatible with WebKit / Chromium.

src/platform-linux.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 753 matching lines @@
       sample->fp = reinterpret_cast<Address>(mcontext.gregs[R11]);
 #else
       sample->pc = reinterpret_cast<Address>(mcontext.arm_pc);
       sample->sp = reinterpret_cast<Address>(mcontext.arm_sp);
       sample->fp = reinterpret_cast<Address>(mcontext.arm_fp);
 #endif
 #elif V8_HOST_ARCH_MIPS
     // Implement this on MIPS.
       UNIMPLEMENTED();
 #endif
-#ifdef ENABLE_CPP_PROFILES_PROCESSOR
-      active_sampler_->SampleStack(sample);
-#else
       if (IsVmThread()) {
         active_sampler_->SampleStack(sample);
       }
-#endif
     }
   }
 #ifndef ENABLE_CPP_PROFILES_PROCESSOR
   active_sampler_->Tick(sample);
 #endif
 #endif
 }
 
 
 class Sampler::PlatformData : public Malloced {
@@ skipping 58 matching lines @@
 
   // This sampler is no longer the active sampler.
   active_sampler_ = NULL;
   active_ = false;
 }
 
 
 #endif  // ENABLE_LOGGING_AND_PROFILING
 
 } }  // namespace v8::internal