Revert r214000 to reland r213996.

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 # running overnight and removing outdated bugs/suppressions.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 396 matching lines @@
    fun:v8::internal::SkipList::Update
    fun:v8::internal::PagedSpace::AllocateRaw
    fun:v8::internal::Heap::ReserveSpace
    fun:v8::internal::Deserializer::Deserialize
    fun:v8::internal::Isolate::Init
    fun:v8::internal::V8::Initialize
    fun:v8::internal::Snapshot::Initialize
    fun:*InitializeHelper
 }
 {
-   bug_114750_a
-   Heapcheck:Leak
-   fun:::FindBestMatchFontFamilyName
-   fun:gfx::PlatformFontPango::PlatformFontPango
-   fun:PlatformFontPangoTest_FamilyList_Test::TestBody
-}
-{
-   bug_114750_b
-   Heapcheck:Leak
-   fun:??
-   fun:FindBestMatchFontFamilyName
-   fun:PlatformFontPango
-   fun:gfx::PlatformFont::CreateFromNativeFont
-   fun:Font
-   fun:PlatformFontPango
-   fun:gfx::PlatformFont::CreateDefault
-   fun:Font
-   ...
-   fun:*Test*
-}
-{
    bug_114770
    Heapcheck:Leak
    ...
    fun:TestShell::InitializeTestShell
    fun:TestShellTestSuite::Initialize
    fun:base::TestSuite::Run
 }
 {
    bug_114978
    Heapcheck:Leak
@@ skipping 557 matching lines @@
    ...
    fun:EncodeDecodeTest_Elf_Small_Test::TestBody
 }
 {
    bug_264225
    Heapcheck:Leak
    ...
    fun:TestingProfile::CreateRequestContext
    fun:UbertokenFetcherTest::SetUp
 }