Valgrind: Widen a few existing suppressions and add a few new ones for HitTests and Mac flakiness.

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 # running overnight and removing outdated bugs/suppressions.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 542 matching lines @@
    ...
    fun:_ZN3IPC11SyncChannel*Channel4Mode*Listener*
 }
 {
    bug_17540
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN4base19MessagePumpLibevent19WatchFileDescriptor*FileDescriptorWatcherEPNS0_7WatcherE
    fun:_ZN4base16MessageLoopForIO19WatchFileDescriptor*MessagePumpLibevent21FileDescriptorWatcherEPNS2_7WatcherE
    ...
-   fun:_ZN3IPC7Channel11ChannelImpl7ConnectEv
-   fun:_ZN3IPC7Channel7ConnectEv
+   fun:_ZN3IPC*Channel*ConnectEv

[groby-ooo-7-16, 2014/09/23 23:56:39]

Shouldn't that simply get rid of ChannelImpl in the call chain? Or are there
more things caught by this?

[Lei Zhang, 2014/09/24 00:04:40]

The ChannelImpl::Connect() call is gone. Channel::Connect() has become
ChannelPosix::Connect(), but I'm just wildcarding it in case the frame has minor
changes in the future.

    fun:_ZN3IPC12ChannelProxy7Context15OnChannelOpenedEv
 }
 {
    # slight variant of the above
    bug_19371a
    Memcheck:Leak
    fun:_Znw*
    ...
    fun:_ZN4base13WaitableEvent7EnqueueEPNS0_6WaiterE
    fun:_ZN4base13WaitableEvent9TimedWaitERKNS_9TimeDeltaE
@@ skipping 3055 matching lines @@
 {
    bug_385396d
    Memcheck:Uninitialized
    fun:_ZNK7blink10LayoutUnit5floorEv
    ...
    fun:_ZN5blink12EventHandler18handleGestureEventERKNS_20PlatformGestureEventE
    fun:_ZN5blink11WebViewImpl18handleGestureEventERKNS_15WebGestureEventE
    fun:_ZN5blink18PageWidgetDelegate16handleInputEventEPN7blink4PageERNS_22PageWidgetEventHandlerERKNS_13WebInputEventE
 }
 {
+   bug_385396e
+   Memcheck:Uninitialized
+   fun:_ZN5blink15roundedIntPointERKNS_11LayoutPointE
+   fun:_ZNK5blink15HitTestLocation12roundedPointEv
+   fun:_ZN5blink10RenderView7hitTestERKNS_14HitTestRequestERKNS_15HitTestLocationERNS_13HitTestResultE
+   fun:_ZN5blink10RenderView7hitTestERKNS_14HitTestRequestERNS_13HitTestResultE
+   fun:_ZN5blink12EventHandler20hitTestResultAtPointERKNS_11LayoutPointEjRKNS_10LayoutSizeE
+   fun:_ZN5blink12EventHandler18targetGestureEventERKNS_20PlatformGestureEventEb
+}
+{
    bug_387435
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN7content16WebURLLoaderImplC1Ev
    fun:_ZN7content17BlinkPlatformImpl15createURLLoaderEv
    fun:_ZN5blink10PingLoaderC1EPNS_10LocalFrameERNS_15ResourceRequestERKNS_18FetchInitiatorInfoENS_17StoredCredentialsE
    fun:_ZN5blink10PingLoader5startEPNS_10LocalFrameERNS_15ResourceRequestERKNS_18FetchInitiatorInfoENS_17StoredCredentialsE
    fun:_ZN5blink10PingLoader9loadImageEPNS_10LocalFrameERKNS_4KURLE
    fun:_ZN5blink15ResourceFetcher10fetchImageERNS_12FetchRequestE
    fun:_ZN5blink11ImageLoader19doUpdateFromElementEb
@@ skipping 318 matching lines @@
    fun:_ZN5blink11RenderBlock13paintChildrenERNS_9PaintInfoERKNS_11LayoutPointE
    fun:_ZN5blink11RenderBlock13paintContentsERNS_9PaintInfoERKNS_11LayoutPointE
    fun:_ZN5blink11RenderBlock11paintObjectERNS_9PaintInfoERKNS_11LayoutPointE
    fun:_ZN5blink11RenderBlock5paintERNS_9PaintInfoERKNS_11LayoutPointE
    fun:_ZN5blink11RenderBlock10paintChildEPNS_9RenderBoxERNS_9PaintInfoERKNS_11LayoutPointE
    fun:_ZN5blink11RenderBlock13paintChildrenERNS_9PaintInfoERKNS_11LayoutPointE
    fun:_ZN5blink11RenderBlock13paintContentsERNS_9PaintInfoERKNS_11LayoutPointE
    fun:_ZN5blink11RenderBlock11paintObjectERNS_9PaintInfoERKNS_11LayoutPointE
 }
 {
+   bug_411235
+   Memcheck:Overlap
+   fun:memcpy@@GLIBC_2.14
+   fun:IncrementalCopyFastPath
+   fun:BrotliDecompress
+   fun:BrotliDecompressBuffer
+   fun:_ZN12_GLOBAL__N_115Woff2UncompressEPhmPKhmj
+}
+{
    bug_415092
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN4base22PosixDynamicThreadPool7AddTaskEPNS_11PendingTaskE
    fun:_ZN4base22PosixDynamicThreadPool8PostTaskERKN15tracked_objects8LocationERKNS_8CallbackIFvvEEE
    fun:_ZN4base12_GLOBAL__N_114WorkerPoolImpl8PostTaskERKN15tracked_objects8LocationERKNS_8CallbackIFvvEEEb
    fun:_ZN4base10WorkerPool8PostTaskERKN15tracked_objects8LocationERKNS_8CallbackIFvvEEEb
 }
 {
    bug_416729
    Memcheck:Unaddressable
    fun:_ZNK5blink6MemberINS_38PlatformSpeechSynthesisUtteranceClientEEcvPS1_Ev
    fun:_ZNK5blink32PlatformSpeechSynthesisUtterance6clientEv
    fun:_ZN5blink15SpeechSynthesis17didFinishSpeakingEPNS_32PlatformSpeechSynthesisUtteranceE
    fun:_ZN5blink29PlatformSpeechSynthesizerMock16speakingFinishedEPNS_5TimerIS0_EE
    fun:_ZN5blink5TimerINS_29PlatformSpeechSynthesizerMockEE5firedEv
    fun:_ZN5blink12ThreadTimers24sharedTimerFiredInternalEv
    fun:_ZN5blink12ThreadTimers16sharedTimerFiredEv
    fun:_ZN5blink9Scheduler15tickSharedTimerEv
    fun:_ZN5blink9Scheduler18sharedTimerAdapterEv
    fun:_ZN7content17BlinkPlatformImpl9DoTimeoutEv
 }
+{
+   bug_417048a
+   Memcheck:Uninitialized
+   ...
+   fun:_ZNK5blink17RenderLineBoxList7hitTestEPNS_20RenderBoxModelObjectERKNS_14HitTestRequestERNS_13HitTestResultERKNS_15HitTestLocationERKNS_11LayoutPointENS_13HitTestActionE
+   fun:_ZN5blink*Render*_14HitTestRequestERNS_13HitTestResultERKNS_15HitTestLocationERKNS_11LayoutPointENS_13HitTestActionE
+}
+{
+   bug_417048b
+   Memcheck:Uninitialized
+   fun:_ZN5blink13InlineFlowBox45clearDescendantsHaveSameLineHeightAndBaselineEv
+   fun:_ZN5blinkL25setLogicalWidthForTextRunEPNS_13RootInlineBoxEPNS_7BidiRunEPNS_10RenderTextEfRKNS*
+   fun:_ZN5blink15RenderBlockFlow41computeInlineDirectionPositionsForSegmentEPNS_13RootInlineBoxERKNS*
+   fun:_ZN5blink15RenderBlockFlow38computeInlineDirectionPositionsForLineEPNS_13RootInlineBoxERKNS*
+}
+{
+   bug_417048c
+   Memcheck:Uninitialized
+   fun:_ZNK5blink13InlineFlowBox35constrainToLineTopAndBottomIfNeededERNS_10LayoutRectE
+   fun:_ZN5blink13InlineFlowBox28paintBoxDecorationBackgroundERNS_9PaintInfoERKNS_11LayoutPointE
+   fun:_ZN5blink13InlineFlowBox5paintERNS_9PaintInfoERKNS_11LayoutPointENS_10LayoutUnitES6_
+   fun:_ZN5blink13InlineFlowBox5paintERNS_9PaintInfoERKNS_11LayoutPointENS_10LayoutUnitES6_
+   fun:_ZN5blink13RootInlineBox5paintERNS_9PaintInfoERKNS_11LayoutPointENS_10LayoutUnitES6_
+   fun:_ZNK5blink18LineBoxListPainter5paintEPNS_20RenderBoxModelObjectERNS_9PaintInfoERKNS_11LayoutPointE
+}
+{
+   bug_417048d
+   Memcheck:Uninitialized
+   ...
+   fun:_ZNK5blink13RootInlineBox13maxLogicalTopEv
+   fun:_ZN5blinkL22computeUnderlineOffsetENS_21TextUnderlinePositionERKNS_11FontMetricsEPKNS_13InlineTextBoxEf
+   fun:_ZN5blink13InlineTextBox15paintDecorationEPNS_15GraphicsContextERKNS_10FloatPointENS_14TextDecorationE
+   fun:_ZN5blink13InlineTextBox5paintERNS_9PaintInfoERKNS_11LayoutPointENS_10LayoutUnitES6_
+   fun:_ZN5blink13InlineFlowBox5paintERNS_9PaintInfoERKNS_11LayoutPointENS_10LayoutUnitES6_
+   fun:_ZN5blink13RootInlineBox5paintERNS_9PaintInfoERKNS_11LayoutPointENS_10LayoutUnitES6_
+   fun:_ZNK5blink17RenderLineBoxList5paintEPNS_20RenderBoxModelObjectERNS_9PaintInfoERKNS_11LayoutPointE
+}