skia: Added SkDiscardableMemory interface.

Chrome's implementation of SkDiscardableMemory is provided here:
https://codereview.chromium.org/23206002. SkDiscardableMemory is
intended to be used for image caching.

R=reed@google.com, scroggo@google.com, hclam@chromium.org, jamesr@chromium.org
BUG=229120

Author=ernstm@chromium.org

Submitted on behalf of ernstm@chromium.org due to commit queue bug.

Review URL: https://codereview.chromium.org/22950012

git-svn-id: http://skia.googlecode.com/svn/trunk@10797 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 12 insertions, 0 deletions

diff --git a/src/ports/SkDiscardableMemory_none.cpp b/src/ports/SkDiscardableMemory_none.cpp
new file mode 100644
index 0000000000..6559097e62
--- /dev/null
+++ b/src/ports/SkDiscardableMemory_none.cpp
@@ -0,0 +1,12 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkDiscardableMemory.h"
+
+SkDiscardableMemory* SkDiscardableMemory::Create(size_t bytes) {
+    return NULL;
+}