Implement a dynamically growing memory log buffer with an upper limit.

tools/gyp/v8.gyp

Index: tools/gyp/v8.gyp
diff --git a/tools/gyp/v8.gyp b/tools/gyp/v8.gyp
index 050cb95a36474b8ebc0df6b768f93262a41ce6ba..7b9e3ac9d335b48a13553ac6c4718cd9fc035140 100644
--- a/tools/gyp/v8.gyp
+++ b/tools/gyp/v8.gyp
@@ -2,7 +2,7 @@
 # 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
@@ -12,7 +12,7 @@
 #     * Neither the name of Google Inc. nor the names of its
 #       contributors may be used to endorse or promote products derived
 #       from this software without specific prior written permission.
-# 
+#
 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
@@ -165,6 +165,8 @@
       '../../src/list.h',
       '../../src/log.cc',
       '../../src/log.h',
+      '../../src/log-utils.cc',
+      '../../src/log-utils.h',
       '../../src/macro-assembler.h',
       '../../src/mark-compact.cc',
       '../../src/mark-compact.h',