Increase the depth limit of JSONParser and IPC serialization from 100 to 200.

base/json/json_parser.cc

 // Copyright (c) 2012 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/json/json_parser.h"
 
 #include <cmath>
 #include <utility>
 
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversion_utils.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/third_party/icu/icu_utf.h"
 #include "base/values.h"
 
 namespace base {
 namespace internal {
 
 namespace {
 
-const int kStackMaxDepth = 100;
+// Chosen to support 99.9% of documents found in the wild late 2016.
+// http://crbug.com/673263
+const int kStackMaxDepth = 200;
 
 const int32_t kExtendedASCIIStart = 0x80;
 
 // DictionaryHiddenRootValue and ListHiddenRootValue are used in conjunction
 // with JSONStringValue as an optimization for reducing the number of string
 // copies. When this optimization is active, the parser uses a hidden root to
 // keep the original JSON input string live and creates JSONStringValue children
 // holding StringPiece references to the input string, avoiding about 2/3rds of
 // string memory copies. The real root value is Swap()ed into the new instance.
 class DictionaryHiddenRootValue : public DictionaryValue {
@@ skipping 951 matching lines @@
                                            const std::string& description) {
   if (line || column) {
     return StringPrintf("Line: %i, column: %i, %s",
         line, column, description.c_str());
   }
   return description;
 }
 
 }  // namespace internal
 }  // namespace base