Tweaks to PPB_VarArrayBuffer in preperation for taking out of Dev.

* Add Unmap.
* Make ByteLength more consistent with the rest of PPAPI.
* Make C++ wrapper not cache the buffer.

BUG=
TEST=


Review URL: http://codereview.chromium.org/9169052

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@119286 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 7 insertions, 2 deletions

diff --git a/webkit/plugins/ppapi/host_array_buffer_var.cc b/webkit/plugins/ppapi/host_array_buffer_var.cc
index 248ff85..c8266df 100644
--- a/webkit/plugins/ppapi/host_array_buffer_var.cc
+++ b/webkit/plugins/ppapi/host_array_buffer_var.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -25,6 +25,10 @@ void* HostArrayBufferVar::Map() {
   return buffer_.data();
 }
 
+void HostArrayBufferVar::Unmap() {
+  // We do not used shared memory on the host side. Nothing to do.
+}
+
 uint32 HostArrayBufferVar::ByteLength() {
   return buffer_.byteLength();
 }
diff --git a/webkit/plugins/ppapi/host_array_buffer_var.h b/webkit/plugins/ppapi/host_array_buffer_var.h
index aaccb34..803069a 100644
--- a/webkit/plugins/ppapi/host_array_buffer_var.h
+++ b/webkit/plugins/ppapi/host_array_buffer_var.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -20,6 +20,7 @@ class HostArrayBufferVar : public ::ppapi::ArrayBufferVar {
 
   // ArrayBufferVar implementation.
   virtual void* Map() OVERRIDE;
+  virtual void Unmap() OVERRIDE;
   virtual uint32 ByteLength() OVERRIDE;
 
   WebKit::WebArrayBuffer& webkit_buffer() { return buffer_; }