WebKit merge 40668:40722 part 1.

third_party/WebKit/WebCore/platform/image-encoders/skia/PNGImageEncoder.h

Index: third_party/WebKit/WebCore/platform/image-encoders/skia/PNGImageEncoder.h
===================================================================
--- third_party/WebKit/WebCore/platform/image-encoders/skia/PNGImageEncoder.h	(revision 0)
+++ third_party/WebKit/WebCore/platform/image-encoders/skia/PNGImageEncoder.h	(revision 0)
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2006-2009, Google Inc. All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * 
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef PNGImageEncoder_h
+#define PNGImageEncoder_h
+
+#include "Vector.h"
+
+class IntSize;
+class SkBitmap;
+
+namespace WebCore {
+
+    // Interface for encoding PNG data. This is a wrapper around libpng.
+    class PNGImageEncoder {
+    public:
+        // Encodes the specific SkBitmap into the supplied vector.
+        static bool encode(const SkBitmap&, WTF::Vector<unsigned char>* output);
+
+        // Encodes the specified image data into the supplied vector.
+        // w, h give the size of the image and bytes_per_row gives the bytes
+        // per row.
+        static bool encode(const unsigned char* input, const IntSize& size, int bytesPerRow, WTF::Vector<unsigned char>* output);
+    };
+
+}  // namespace WebCore
+
+#endif