Local salient image storage for enhanced bookmark experiment.

components/bookmarks_enhanced/image_store_util.cc

Index: components/bookmarks_enhanced/image_store_util.cc
diff --git a/components/bookmarks_enhanced/image_store_util.cc b/components/bookmarks_enhanced/image_store_util.cc
new file mode 100644
index 0000000000000000000000000000000000000000..9400ab18e7d9e032ab7dff10314a7c981085feeb
--- /dev/null
+++ b/components/bookmarks_enhanced/image_store_util.cc
@@ -0,0 +1,33 @@
+// Copyright 2014 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 "components/bookmarks_enhanced/image_store_util.h"
+
+#include "ui/gfx/image/image_skia.h"
+#include "ui/gfx/image/image_util.h"
+
+namespace {
+const int kJpegEncodingQuality = 70;
+}  // namespace
+
+namespace bookmarks_enhanced {
+
+scoped_refptr<base::RefCountedMemory> BytesForImage(const gfx::Image& image) {
+  DCHECK(image.AsImageSkia().image_reps().size() == 1);
+  DCHECK(image.AsImageSkia().image_reps().begin()->scale() == 1.0f);
+
+  std::vector<unsigned char> data;
+  bool succeeded =
+      gfx::JPEG1xEncodedDataFromImage(image, kJpegEncodingQuality, &data);
+
+  if (!succeeded)
+    return scoped_refptr<base::RefCountedMemory>();
+
+  return scoped_refptr<base::RefCountedMemory>(new base::RefCountedBytes(data));
+}
+
+gfx::Image ImageForBytes(const scoped_refptr<base::RefCountedMemory>& bytes) {
+  return gfx::ImageFrom1xJPEGEncodedData(bytes->front(), bytes->size());
+}
+}