Update a couple of suppression rules.

tools/heapcheck/suppressions.txt

 # There are three 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 # running overnight and removing outdated bugs/suppressions.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 126 matching lines @@
 }
 {
    bug_todo_getdelim_lucid
    Heapcheck:Leak
    fun:_IO_getdelim
 }
 {
    bug_119677
    Heapcheck:Leak
    fun:XRRRootToScreen
-   fun:??
    fun:MonitorChangeObserverX11
+   fun:aura::Env::Init
+   fun:aura::Env::GetInstance
 }
 
 #-----------------------------------------------------------------------
 # 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
 {
    Heapcheck sanity test (ToolsSanityTest.MemoryLeak).
    Heapcheck:Leak
    fun:base::ToolsSanityTest_MemoryLeak_Test::TestBody
 }
@@ skipping 1650 matching lines @@
    fun:testing::internal::TestFactoryImpl::CreateTest
 }
 {
    bug_121571_c
    Heapcheck:Leak
    fun:MessageLoop::MessageLoop
    fun:FileSystem*URLRequestJobTest
    fun:FileSystem*URLRequestJobTest_InvalidURL_Test
    fun:testing::internal::TestFactoryImpl::CreateTest
 }