Update V8 to r6101 as required by WebKit r74534

Change-Id: I7f84af8dd732f11898fd644b2c2b1538914cb78d
diff --git a/src/string-stream.cc b/src/string-stream.cc
index d1859a2..7abd1bb 100644
--- a/src/string-stream.cc
+++ b/src/string-stream.cc
@@ -264,7 +264,7 @@
 }
 
 
-void StringStream::OutputToStdOut() {
+void StringStream::OutputToFile(FILE* out) {
   // Dump the output to stdout, but make sure to break it up into
   // manageable chunks to avoid losing parts of the output in the OS
   // printing code. This is a problem on Windows in particular; see
@@ -273,10 +273,10 @@
   for (unsigned next; (next = position + 2048) < length_; position = next) {
     char save = buffer_[next];
     buffer_[next] = '\0';
-    internal::PrintF("%s", &buffer_[position]);
+    internal::PrintF(out, "%s", &buffer_[position]);
     buffer_[next] = save;
   }
-  internal::PrintF("%s", &buffer_[position]);
+  internal::PrintF(out, "%s", &buffer_[position]);
 }