BinaryValue support for NULL buffer.

* Apply original change from CL 10389088 (https://chromiumcodereview.appspot.com/10389088)

* Change BinaryValue to use "scoped_ptr<char[]>" instead of "scoped_ptr<char>". By contract, the memory owned should be deleted with the "delete[]" operator.

BUG=127630

Review URL: https://chromiumcodereview.appspot.com/11745016

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@175482 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 14 insertions, 22 deletions

diff --git a/base/values.cc b/base/values.cc
index 459d56f..7a21709 100644
--- a/base/values.cc
+++ b/base/values.cc
@@ -306,33 +306,32 @@ bool StringValue::Equals(const Value* other) const {
 
 ///////////////////// BinaryValue ////////////////////
 
-BinaryValue::~BinaryValue() {
-  DCHECK(buffer_);
-  if (buffer_)
-    delete[] buffer_;
+BinaryValue::BinaryValue()
+    : Value(TYPE_BINARY),
+      buffer_(NULL),
+      size_(0) {
 }
 
-// static
-BinaryValue* BinaryValue::Create(char* buffer, size_t size) {
-  if (!buffer)
-    return NULL;
+BinaryValue::BinaryValue(scoped_ptr<char[]> buffer, size_t size)
+    : Value(TYPE_BINARY),
+      buffer_(buffer.Pass()),
+      size_(size) {
+}
 
-  return new BinaryValue(buffer, size);
+BinaryValue::~BinaryValue() {
 }
 
 // static
 BinaryValue* BinaryValue::CreateWithCopiedBuffer(const char* buffer,
                                                  size_t size) {
-  if (!buffer)
-    return NULL;
-
   char* buffer_copy = new char[size];
   memcpy(buffer_copy, buffer, size);
-  return new BinaryValue(buffer_copy, size);
+  scoped_ptr<char[]> scoped_buffer_copy(buffer_copy);
+  return new BinaryValue(scoped_buffer_copy.Pass(), size);
 }
 
 BinaryValue* BinaryValue::DeepCopy() const {
-  return CreateWithCopiedBuffer(buffer_, size_);
+  return CreateWithCopiedBuffer(buffer_.get(), size_);
 }
 
 bool BinaryValue::Equals(const Value* other) const {
@@ -341,14 +340,7 @@ bool BinaryValue::Equals(const Value* other) const {
   const BinaryValue* other_binary = static_cast<const BinaryValue*>(other);
   if (other_binary->size_ != size_)
     return false;
-  return !memcmp(buffer_, other_binary->buffer_, size_);
-}
-
-BinaryValue::BinaryValue(char* buffer, size_t size)
-  : Value(TYPE_BINARY),
-    buffer_(buffer),
-    size_(size) {
-  DCHECK(buffer_);
+  return !memcmp(GetBuffer(), other_binary->GetBuffer(), size_);
 }
 
 ///////////////////// DictionaryValue ////////////////////