Fixed several CHECKED_RETURN defects in ipc message utils cc

ipc/ipc_message_utils.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 "ipc/ipc_message_utils.h"
 
 #include "base/file_path.h"
 #include "base/json/json_writer.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/nullable_string16.h"
@@ skipping 33 matching lines @@
         StringPrintf(" and %u more bytes",
                      static_cast<unsigned>(data.size() - kMaxBytesToLog)));
   }
 #endif
 }
 
 bool ReadValue(const Message* m, PickleIterator* iter, Value** value,
                int recursion);
 
 void WriteValue(Message* m, const Value* value, int recursion) {
+  bool result;
   if (recursion > kMaxRecursionDepth) {
     LOG(WARNING) << "Max recursion depth hit in WriteValue.";
     return;
   }
 
   m->WriteInt(value->GetType());
 
   switch (value->GetType()) {
     case Value::TYPE_NULL:
     break;
     case Value::TYPE_BOOLEAN: {
       bool val;
-      value->GetAsBoolean(&val);
+      result = value->GetAsBoolean(&val);
+      DCHECK(result);
       WriteParam(m, val);
       break;
     }
     case Value::TYPE_INTEGER: {
       int val;
-      value->GetAsInteger(&val);
+      result = value->GetAsInteger(&val);
+      DCHECK(result);
       WriteParam(m, val);
       break;
     }
     case Value::TYPE_DOUBLE: {
       double val;
-      value->GetAsDouble(&val);
+      result = value->GetAsDouble(&val);
+      DCHECK(result);
       WriteParam(m, val);
       break;
     }
     case Value::TYPE_STRING: {
       std::string val;
-      value->GetAsString(&val);
+      result = value->GetAsString(&val);
+      DCHECK(result);
       WriteParam(m, val);
       break;
     }
     case Value::TYPE_BINARY: {
       const base::BinaryValue* binary =
           static_cast<const base::BinaryValue*>(value);
       m->WriteData(binary->GetBuffer(), static_cast<int>(binary->GetSize()));
       break;
     }
     case Value::TYPE_DICTIONARY: {
@@ skipping 740 matching lines @@
   return result;
 }
 
 void ParamTraits<MSG>::Log(const param_type& p, std::string* l) {
   l->append("<MSG>");
 }
 
 #endif  // OS_WIN
 
 }  // namespace IPC