Suppress one uninit and widen a few suppressions to make the WebKit/Mac bot greener

tools/valgrind/memcheck/suppressions.txt

Index: tools/valgrind/memcheck/suppressions.txt
===================================================================
--- tools/valgrind/memcheck/suppressions.txt	(revision 126886)
+++ tools/valgrind/memcheck/suppressions.txt	(working copy)
@@ -1718,6 +1718,14 @@
    fun:png_write_row
 }
 {
+   bug_30704f
+   Memcheck:Uninitialized
+   ...
+   fun:wk_png_write_find_filter
+   fun:wk_png_write_row
+   fun:_ZN14webkit_support12_*DoLibpngWrite*
+}
+{
    bug_87232
    Memcheck:Uninitialized
    fun:_ZN7WebCore12base64EncodeEPKcjRN3WTF6VectorIcLj0EEEb
@@ -5158,7 +5166,7 @@
    bug_109353
    Memcheck:Leak
    fun:_Znw*
-   fun:_ZN9__gnu_cxx13new_allocatorISt13_Rb_tree_nodeISsEE8allocateEmPKv
+   fun:_ZN9__gnu_cxx13new_allocatorISt13_Rb_tree_nodeISsEE8allocateE?PKv
    fun:_ZNSt8_Rb_treeISsSsSt9_IdentityISsESt4lessISsESaISsEE11_M_get_nodeEv
    fun:_ZNSt8_Rb_treeISsSsSt9_IdentityISsESt4lessISsESaISsEE14_M_create_nodeERKSs
    fun:_ZNSt8_Rb_treeISsSsSt9_IdentityISsESt4lessISsESaISsEE10_M_insert_EPKSt18_Rb_tree_node_baseS8_RKSs
@@ -5258,7 +5266,7 @@
    fun:_ZN7WebCore11ImageBuffer27platformTransformColorSpaceERKN3WTF6VectorIiLm0EEE
    fun:_ZN7WebCore11ImageBuffer19transformColorSpaceENS_10ColorSpaceES1_
    fun:_ZN7WebCore23RenderSVGResourceFilter17postApplyResourceEPNS_12RenderObjectERPNS_15GraphicsContextEtPKNS_4PathEPKNS_14RenderSVGShapeE
-   fun:_ZN7WebCore16SVGRenderSupport22finishRenderSVGContentEPNS_12RenderObjectERNS_9PaintInfoEPNS_15GraphicsContextE
+   ...
    fun:_ZN7WebCore14RenderSVGShape5paintERNS_9PaintInfoERKNS_8IntPointE
    ...
    fun:_ZN7WebCore13RenderSVGRoot*paint*PaintInfoERKNS_8IntPointE
@@ -5805,6 +5813,15 @@
    ...
    fun:_ZN47SelectFileDialogExtensionTest_SelfDeleting_Test8TestBodyEv
 }
+{
+   bug_118384
+   Memcheck:Uninitialized
+   fun:_ZN7WebCore16CCVideoLayerImpl11appendQuadsERNS_12CCQuadCullerEPKNS_17CCSharedQuadStateE
+   fun:_ZN7WebCore12CCRenderPass19appendQuadsForLayerEPNS_11CCLayerImplEPNS_22CCOcclusionTrackerBaseIS1_NS_15CCRenderSurfaceEEEPNS_16CCOverdrawCountsE
+   fun:_ZN7WebCore19CCLayerTreeHostImpl21calculateRenderPassesERN3WTF6VectorINS1_6OwnPtrINS_12CCRenderPassEEELm0EEERNS2_IPNS_11CCLayerImplELm0EEE
+   fun:_ZN7WebCore19CCLayerTreeHostImpl10drawLayersEv
+   fun:_ZN7WebCore19CCSingleThreadProxy11doCompositeEv
+}
 
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