Retire obsolete Valgrind 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 # running overnight and removing outdated bugs/suppressions.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 1133 matching lines @@
 {
    # Intentional - data is stored in thread-local storage for an unjoined
    # worker thread, and so can occasionally leak. See crbug.com/89553 for
    # additional info
    bug_89553
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN12_GLOBAL__N_111DnsReloader11MaybeReloadEv
 }
 {
-   # Intentional - atomic strings and hash map in WebCore::nameToPseudoTypeMap() (CSSSelector.cpp) are to be leaked
-   bug_108516
-   Memcheck:Leak
-   fun:_Znw*
-   fun:_ZN7WebCoreL19nameToPseudoTypeMapEv
-}
-{
    bug_79322 (Intentional)
    Memcheck:Leak
    fun:_Znw*
    ...
    fun:_ZN4base*StatisticsRecorderTest_*_Test8TestBodyEv
 }
 {
    # This test simulates a ppapi plugin that fails to decrement a reference
    # count. In that case, the ppapi runtime will clean up its internal data
    # structures, but intentionally does not delete the plugin object's
@@ skipping 1456 matching lines @@
    fun:get_shaper_and_font
    fun:itemize_state_process_run
    fun:pango_itemize_with_base_dir
    fun:pango_layout_check_lines
    fun:pango_layout_get_extents_internal
    fun:pango_layout_get_pixel_extents
    fun:pango_layout_get_pixel_size
    fun:_ZN3gfx10Canvas13SizeStringIntERKSbItN4base20string16_char_traitsESaItEERKNS_4FontEPiSA_i
 }
 {
-   bug_70599
-   Memcheck:Uninitialized
-   fun:bcmp
-   fun:_ZN3WTF14VectorComparerILb1EN7WebCore11CSSPropertyE*
-   fun:_ZN3WTF20VectorTypeOperationsIN7WebCore11CSSPropertyE*
-   fun:_ZN3WTFeqIN7WebCore11CSSPropertyE*
-   fun:_ZNK7WebCore26CSSMutableStyleDeclaration15propertiesEqualEPKS0_
-   fun:_ZNK7WebCore12NamedNodeMap20mappedMapsEquivalentEPKS0_
-   fun:_ZNK7WebCore16CSSStyleSelector24canShareStyleWithElementE*
-}
-{
    bug_71152
    Memcheck:Leak
    fun:_Znw*
    ...
    fun:_ZN14SessionService20OnGotSessionCommandsEi13scoped_refptrIN18BaseSessionService26InternalGetCommandsRequestEE
 }
 {
    bug_71728
    Memcheck:Leak
    fun:_Znw*
@@ skipping 1479 matching lines @@
    fun:_Znw*
    fun:_ZN7WebCore11iBeamCursorEv
    fun:_ZN7WebCore12EventHandler12selectCursorERKNS_28MouseEventWithHitTestResultsEPNS_9ScrollbarE
    fun:_ZN7WebCore12EventHandler20handleMouseMoveEventERKNS_18PlatformMouseEventEPNS_13HitTestResultEb
    fun:_ZN7WebCore12EventHandler10mouseMovedERKNS_18PlatformMouseEventEb
    fun:_ZN6WebKit11WebViewImpl9mouseMoveERKNS_13WebMouseEventE
    fun:_ZN6WebKit11WebViewImpl16handleInputEventERKNS_13WebInputEventE
    fun:_ZN12RenderWidget18OnHandleInputEventERKN3IPC7MessageE
 }
 {
-   bug_107698
-   Memcheck:Leak
-   fun:malloc
-   ...
-   fun:_ZN7WebCore9CSSParser10parseSheetEPNS_13CSSStyleSheetERKN3WTF6StringEiPNS3_7HashMapIPNS_12CSSStyleRuleENS3_6RefPtrINS_17CSSRuleSourceDataEEENS3_7PtrHashIS9_EENS3_10HashTraitsIS9_EENSF_ISC_EEEE
-   fun:_ZN7WebCore13CSSStyleSheet17parseStringAtLineERKN3WTF6StringEbi
-   fun:_ZN7WebCore13CSSStyleSheet11parseStringERKN3WTF6StringEb
-   fun:_ZN7WebCoreL12parseUASheetERKN3WTF6StringE
-}
-{
    bug_107698a
    Memcheck:Leak
    fun:malloc
    ...
    fun:_ZN7WebCore9CSSParser10parseSheetEPNS_13CSSStyleSheetERKN3WTF6StringEiPNS3_7HashMapIPNS_12CSSStyleRuleENS3_6RefPtrINS_17CSSRuleSourceDataEEENS3_7PtrHashIS9_EENS3_10HashTraitsIS9_EENSF_ISC_EEEE
    fun:_ZN7WebCore13CSSStyleSheet17parseStringAtLineERKN3WTF6StringEbi
    fun:_ZN7WebCore12StyleElement11createSheetEPNS_7ElementEiRKN3WTF6StringE
    fun:_ZN7WebCore12StyleElement7processEPNS_7ElementE
 }
 {
@@ skipping 3231 matching lines @@
 }
 {
    bug_246870
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN6webrtc13DesktopRegionaSERKS0_
    fun:_ZN5media12_GLOBAL__N_119ScreenCapturerLinux7CaptureERKN6webrtc13DesktopRegionE
    fun:_ZN5media19ScreenCaptureDevice4Core9DoCaptureEv
    fun:_ZN5media19ScreenCaptureDevice4Core*
 }