Added support to trace_event for passing static string arguments without copy

base/debug/trace_event.cc

 // Copyright (c) 2011 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 "base/debug/trace_event.h"
 
 #include <algorithm>
 
 #if defined(OS_WIN)
 #include "base/debug/trace_event_win.h"
@@ skipping 65 matching lines @@
       *out += temp_string;
       break;
     case TRACE_TYPE_POINTER:
       base::snprintf(temp_string, arraysize(temp_string), "%llu",
                      static_cast<unsigned long long>(
                        reinterpret_cast<intptr_t>(
                          as_pointer())));
       *out += temp_string;
       break;
     case TRACE_TYPE_STRING:
+    case TRACE_TYPE_STATIC_STRING:
       *out += "\"";
       start_pos = out->size();
       *out += as_string();
       // replace " character with '
       while ((start_pos = out->find_first_of('\"', start_pos)) !=
              std::string::npos)
         (*out)[start_pos] = '\'';
       *out += "\"";
       break;
     default:
@@ skipping 429 matching lines @@
         p_data_->name,
         NULL, 0, NULL, 0,
         p_data_->threshold_begin_id, p_data_->threshold, false);
   }
 }
 
 } // namespace internal
 
 }  // namespace debug
 }  // namespace base