Remove support for logging into a memory buffer.

src/log.cc

Index: src/log.cc
diff --git a/src/log.cc b/src/log.cc
index 004e21a650f644cfb9524fc6d2d48b4da7749a95..46fc1e18fd828a47530a4133c59288a761e411a7 100644
--- a/src/log.cc
+++ b/src/log.cc
@@ -1378,7 +1378,6 @@ void Logger::PauseProfiler() {
           ticker_->Stop();
         }
         FLAG_log_code = false;
-        // Must be the same message as Log::kDynamicBufferSeal.
         LOG(ISOLATE, UncheckedStringEvent("profiler", "pause"));
       }
       --logging_nesting_;
@@ -1420,11 +1419,6 @@ bool Logger::IsProfilerSamplerActive() {
 }
 
 
-int Logger::GetLogLines(int from_pos, char* dest_buf, int max_size) {
-  return log_->GetLogLines(from_pos, dest_buf, max_size);
-}
-
-
 class EnumerateOptimizedFunctionsVisitor: public OptimizedFunctionVisitor {
  public:
   EnumerateOptimizedFunctionsVisitor(Handle<SharedFunctionInfo>* sfis,