Suppression for uninitialized access in PNGImageReader::decode

tools/valgrind/memcheck/suppressions.txt

 # There are four kinds of suppressions in this file.
 # 1. third party stuff we have no control over
 #
 # 2. intentional unit test errors, or stuff that is somehow a false positive
 # in our own code, or stuff that is so trivial it's not worth fixing
 #
 # 3. Suppressions for real chromium bugs that are not yet fixed.
 # These should all be in chromium's bug tracking system (but a few aren't yet).
 # Periodically we should sweep this file and the bug tracker clean by
 # running overnight and removing outdated bugs/suppressions.
@@ skipping 1669 matching lines @@
 {
    bug_30704e
    Memcheck:Uninitialized
    fun:crc32
    ...
    fun:png_write_row
    fun:_ZN7WebCore*12encodePixels*_7IntSizeEPhbPN3WTF6VectorIhLj0EEE
    fun:_ZN7WebCore15PNGImageEncoder6encode*
 }
 {
+   bug_30704f
+   Memcheck:Uninitialized
+   ...
+   fun:png_process_data
+   fun:_ZN7WebCore14PNGImageReader6decodeERKNS_12SharedBufferEb
+   fun:_ZN7WebCore15PNGImageDecoder6decodeEb
+   fun:_ZN7WebCore15PNGImageDecoder18frameBufferAtIndexEm
+   fun:_ZN7WebCore11ImageSource18createFrameAtIndexEm
+   fun:_ZN7WebCore11BitmapImage10cacheFrameEm
+   fun:_ZN7WebCore11BitmapImage12frameAtIndexEm
+   fun:_ZN7WebCore11BitmapImage26nativeImageForCurrentFrameEv
+   fun:_ZN7WebCore11BitmapImage4drawEPNS_15GraphicsContextERKNS_9FloatRectES5_NS_10ColorSpaceENS_17CompositeOperatorE
+   fun:_ZN7WebCore15GraphicsContext9drawImageEPNS_5ImageENS_10ColorSpaceERKNS_9FloatRectES6_NS_17CompositeOperatorEb
+   fun:_ZN7WebCore15GraphicsContext9drawImageEPNS_5ImageENS_10ColorSpaceERKNS_7IntRectES6_NS_17CompositeOperatorEb
+   fun:_ZN7WebCore15GraphicsContext9drawImageEPNS_5ImageENS_10ColorSpaceERKNS_7IntRectENS_17CompositeOperatorEb
+   fun:_ZN7WebCore11RenderImage13paintIntoRectEPNS_15GraphicsContextERKNS_7IntRectE
+   fun:_ZN7WebCore11RenderImage13paintReplacedERNS_9PaintInfoERKNS_8IntPointE
+   fun:_ZN7WebCore14RenderReplaced5paintERNS_9PaintInfoERKNS_8IntPointE
+   fun:_ZN7WebCore11RenderImage5paintERNS_9PaintInfoERKNS_8IntPointE
+   fun:_ZN7WebCore9InlineBox5paintERNS_9PaintInfoERKNS_8IntPointEii
+}
+{
    bug_87232
    Memcheck:Uninitialized
    fun:_ZN7WebCore12base64EncodeEPKcjRN3WTF6VectorIcLj0EEEb
    fun:_ZN7WebCore12base64EncodeERKN3WTF6VectorIcLj0EEERS2_b
    fun:_ZN7WebCore*14ImageToDataURL*SkBitmapEEN3WTF6StringERT_*
 }
 {
    bug_31800
    Memcheck:Leak
    fun:_Znw*
@@ skipping 3711 matching lines @@
    obj:/lib/libselinux.so.1
    obj:/lib/libselinux.so.1
 }
 {
    bug_todo_grep
    Memcheck:Leak
    fun:malloc
    obj:/bin/grep
    obj:/bin/grep
 }