Valgrind: Suppress more layout test errors.

tools/valgrind/memcheck/suppressions.txt

Index: tools/valgrind/memcheck/suppressions.txt
diff --git a/tools/valgrind/memcheck/suppressions.txt b/tools/valgrind/memcheck/suppressions.txt
index 74cc64f09a25ed9d7ea89e394983faa36ce82f57..0a61f5d06c810267e31a499068f1699eb1f5d0fc 100644
--- a/tools/valgrind/memcheck/suppressions.txt
+++ b/tools/valgrind/memcheck/suppressions.txt
@@ -3335,7 +3335,7 @@
    fun:_ZN5blink17CSSPropertyParser9validUnitEPNS_14CSSParserValueENS0_5UnitsENS0_31ReleaseParsedCalcValueConditionE
    ...
    fun:_ZN5blink17CSSPropertyParser10parseValueENS_13CSSPropertyIDEb
-   fun:_ZN5blink17CSSPropertyParser10parseValueENS_13CSSPropertyIDEbPNS_18CSSParserValueListERKNS_16CSSParserContextERN3WTF6VectorINS_11CSSPropertyELm256ENS7_16DefaultAllocatorEEENS_13StyleRuleBase4TypeE
+   fun:_ZN5blink17CSSPropertyParser10parseValueENS_13CSSPropertyID*
    fun:_ZN5blink13CSSParserImpl23consumeDeclarationValueENS_19CSSParserTokenRangeENS_13CSSPropertyIDEbNS_13StyleRuleBase4TypeE
 }
 {
@@ -3399,6 +3399,18 @@
    fun:_ZN5blink4Heap19processMarkingStackEPNS_7VisitorE
 }
 {
+   bug_521656
+   Memcheck:Uninitialized
+   fun:_ZN5blink10TraceTraitINS_11WebGLObjectEE5traceEPNS_7VisitorEPv
+   fun:_ZN5blink13CallbackStack4Item4callEPNS_7VisitorE
+   fun:_ZN5blink4Heap25popAndInvokeTraceCallbackEPNS_7VisitorE
+   fun:_ZN5blink4Heap19processMarkingStackEPNS_7VisitorE
+   fun:_ZN5blink4Heap14collectGarbageENS_11ThreadState10StackStateENS1_6GCTypeENS0_8GCReasonE
+   fun:_ZN5blink14V8GCController10gcEpilogueEN2v86GCTypeENS1_15GCCallbackFlagsE
+   fun:_ZN2v88internal4Heap23CallGCEpilogueCallbacksENS_6GCTypeENS_15GCCallbackFlagsE
+   fun:_ZN2v88internal4Heap24PerformGarbageCollectionENS0_16GarbageCollectorENS_15GCCallbackFlagsE
+}
+{
    bug_522049
    Memcheck:Unaddressable
    ...
@@ -3546,3 +3558,13 @@
    fun:_ZN3ots10OTSContext7ProcessEPNS_9OTSStreamEPKhmj
    fun:_ZN5blink17OpenTypeSanitizer8sanitizeEv
 }
+{
+   bug_542875
+   Memcheck:Leak
+   fun:malloc
+   fun:_ZN3WTF10fastMallocEm
+   ...
+   fun:_ZN5blink13DOMTypedArrayIN3WTF17Uint8ClampedArrayEN2v817Uint8ClampedArrayEE12createOrNullEj
+   fun:_ZN5blink9ImageData6createERKNS_7IntSizeE
+   fun:_ZNK5blink17HTMLCanvasElement11toImageDataENS_19SourceDrawingBufferE
+}