Use a v8 external string resource for the extension api json.

BUG=95147

Review URL: http://codereview.chromium.org/7904026

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@101424 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 32 insertions, 0 deletions

diff --git a/chrome/renderer/static_v8_external_string_resource.h b/chrome/renderer/static_v8_external_string_resource.h
new file mode 100644
index 0000000..7a72b79
--- /dev/null
+++ b/chrome/renderer/static_v8_external_string_resource.h
@@ -0,0 +1,32 @@
+// 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.
+
+#ifndef CHROME_RENDERER_EXTENSIONS_STATIC_V8_EXTERNAL_STRING_RESOURCE_H_
+#define CHROME_RENDERER_EXTENSIONS_STATIC_V8_EXTERNAL_STRING_RESOURCE_H_
+#pragma once
+
+#include "base/compiler_specific.h"
+#include "base/string_piece.h"
+#include "v8/include/v8.h"
+
+namespace base {
+class StringPiece;
+}
+
+// A very simple implementation of v8::ExternalAsciiStringResource that just
+// wraps a buffer. The buffer must outlive the v8 runtime instance this resource
+// is used in.
+class StaticV8ExternalAsciiStringResource
+    : public v8::String::ExternalAsciiStringResource {
+ public:
+  explicit StaticV8ExternalAsciiStringResource(const base::StringPiece& buffer);
+
+  virtual const char* data() const OVERRIDE;
+  virtual size_t length() const OVERRIDE;
+
+ private:
+  base::StringPiece buffer_;
+};
+
+#endif // CHROME_RENDERER_EXTENSIONS_STATIC_V8_EXTERNAL_STRING_RESOURCE_H_