[Isolates] Merge 6700:7030 from bleeding_edge to isolates.

src/log-utils.cc

 // Copyright 2009 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 365 matching lines @@
   for (int i = 0; i < len; i++) {
     uc32 c = str->Get(i);
     if (c > 0xff) {
       Append("\\u%04x", c);
     } else if (c < 32 || c > 126) {
       Append("\\x%02x", c);
     } else if (c == ',') {
       Append("\\,");
     } else if (c == '\\') {
       Append("\\\\");
+    } else if (c == '\"') {
+      Append("\"\"");
     } else {
       Append("%lc", c);
     }
   }
 }
 
 
 void LogMessageBuilder::AppendStringPart(const char* str, int len) {
   if (pos_ + len > Log::kMessageBufferSize) {
     len = Log::kMessageBufferSize - pos_;
@@ skipping 16 matching lines @@
   if (written != pos_) {
     log_->stop();
     log_->logger_->LogFailure();
   }
 }
 
 
 #endif  // ENABLE_LOGGING_AND_PROFILING
 
 } }  // namespace v8::internal