Valgrind: Widen a few layout test suppressions.

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 # running overnight and removing outdated bugs/suppressions.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 6012 matching lines @@
    fun:_ZN5blink17WebLocalFrameImpl22initializeAsChildFrameEPN7blink9FrameHostEPNS1_10FrameOwnerERKN3WTF12AtomicStringES9_
    fun:_ZN5blink17WebLocalFrameImpl16createChildFrameERKN7blink16FrameLoadRequestEPNS1_21HTMLFrameOwnerElementE
 }
 {
    bug_385396a
    Memcheck:Uninitialized
    ...
    fun:_ZN5blink11RenderLayer7hitTestERKNS_14HitTestRequestERKNS_15HitTestLocationERNS_13HitTestResultE
    fun:_ZN5blink10RenderView7hitTestERKNS_14HitTestRequestERKNS_15HitTestLocationERNS_13HitTestResultE
    fun:_ZN5blink10RenderView7hitTestERKNS_14HitTestRequestERNS_13HitTestResultE
-   fun:_ZN5blink8Document17prepareMouseEventERKNS_14HitTestRequestERKNS_11LayoutPointERKNS_18PlatformMouseEventE
-   fun:_ZN5blink12EventHandler17prepareMouseEventERKNS_14HitTestRequestERKNS_18PlatformMouseEventE
-   fun:_ZN5blink12EventHandler26getSubFrameForGestureEventERKNS_8IntPointERKNS_20PlatformGestureEventE
+   ...
    fun:_ZN5blink12EventHandler18handleGestureEventERKNS_20PlatformGestureEventE
    fun:_ZN5blink11WebViewImpl18handleGestureEventERKNS_15WebGestureEventE
-   fun:_ZN5blink18PageWidgetDelegate16handleInputEventEPN7blink4PageERNS_22PageWidgetEventHandlerERKNS_13WebInputEventE
-   fun:_ZN5blink11WebViewImpl16handleInputEventERKNS_13WebInputEventE
 }
 {
    bug_385396b
    Memcheck:Uninitialized
-   fun:_ZN5blink10LayoutUnit8setValueEi
-   fun:_ZN5blink10LayoutUnitC1Ei
-   fun:_ZN5blink11LayoutPointC1ERKNS_8IntPointE
+   ...
+   fun:_ZN5blink11LayoutPointC*ERKNS_8IntPointE
    ...
    fun:_ZN5blink12EventHandler18handleGestureEventERKNS_20PlatformGestureEventE
    fun:_ZN5blink11WebViewImpl18handleGestureEventERKNS_15WebGestureEventE
-   fun:_ZN5blink18PageWidgetDelegate16handleInputEventEPN7blink4PageERNS_22PageWidgetEventHandlerERKNS_13WebInputEventE
 }
 {
    bug_385396c
    Memcheck:Uninitialized
-   fun:_ZNK7blink7IntRect8containsEii
+   fun:_ZNK5blink7IntRect8containsEii
    ...
    fun:_ZN5blink12EventHandler18handleGestureEventERKNS_20PlatformGestureEventE
    fun:_ZN5blink11WebViewImpl18handleGestureEventERKNS_15WebGestureEventE
-   fun:_ZN5blink18PageWidgetDelegate16handleInputEventEPN7blink4PageERNS_22PageWidgetEventHandlerERKNS_13WebInputEventE
 }
 {
    bug_385396d
    Memcheck:Uninitialized
    fun:_ZNK7blink10LayoutUnit5floorEv
    ...
    fun:_ZN5blink12EventHandler18handleGestureEventERKNS_20PlatformGestureEventE
    fun:_ZN5blink11WebViewImpl18handleGestureEventERKNS_15WebGestureEventE
    fun:_ZN5blink18PageWidgetDelegate16handleInputEventEPN7blink4PageERNS_22PageWidgetEventHandlerERKNS_13WebInputEventE
 }
@@ skipping 260 matching lines @@
 }
 {
    bug_400547
    Memcheck:Uninitialized
    fun:_ZNK5blink22GraphicsLayerDebugInfo17appendOwnerNodeIdEPNS_10JSONObjectE
    fun:_ZNK5blink22GraphicsLayerDebugInfo19appendAsTraceFormatEPNS_9WebStringE
    fun:_ZNK7content15TracedDebugInfo19AppendAsTraceFormatEPSs
    fun:_ZNK2cc9LayerImpl11AsValueIntoEPN4base5debug11TracedValueE
    fun:_ZNK2cc*LayerImpl11AsValueIntoEPN4base5debug11TracedValueE
 }