Revert of Improve DEFINE_STATIC_LOCAL()'s handling of Blink GCed objects.

Revert of Improve DEFINE_STATIC_LOCAL()'s handling of Blink GCed objects. (patchset #8 id:140001 of https://codereview.chromium.org/1850413002/ )

Reason for revert:
Caused leaks in https://build.chromium.org/p/chromium.memory.fyi/builders/Linux%20Tests%20%28valgrind%29%282%29/builds/54690/steps/memory_test%3A%20extensions_unittests/logs/stdio:

Leak_DefinitelyLost
16 bytes in 1 blocks are definitely lost in loss record 346 of 2,713
  malloc (m_replacemalloc/vg_replace_malloc.c:1138)
  WTF::Partitions::fastMalloc(unsigned long, char const*) (third_party/WebKit/Source/wtf/PartitionAlloc.h:736)
  blink::PersistentBase<blink::HeapHashSet<blink::WeakMember<blink::FontCacheClient>, WTF::WeakMemberHash<blink::FontCacheClient>, WTF::HashTraits<blink::WeakMember<blink::FontCacheClient> > >, (blink::WeaknessPersistentConfiguration)0, (blink::CrossThreadnessPersistentConfiguration)0>::operator new(unsigned long) (/mnt/data/b/build/slave/chromium-rel-linux-valgrind-tests-2/build/src/out/Release/extensions_unittests)
  blink::fontCacheClients() (third_party/WebKit/Source/platform/fonts/FontCache.cpp:300)
  blink::FontCache::addClient(blink::FontCacheClient*) (third_party/WebKit/Source/platform/fonts/FontCache.cpp:308)
  blink::CSSFontSelector::CSSFontSelector(blink::Document*) (third_party/WebKit/Source/core/css/CSSFontSelector.cpp:56)
  blink::CSSFontSelector::create(blink::Document*) (/mnt/data/b/build/slave/chromium-rel-linux-valgrind-tests-2/build/src/out/Release/extensions_unittests)


Leak_DefinitelyLost
16 bytes in 1 blocks are definitely lost in loss record 352 of 2,713
  malloc (m_replacemalloc/vg_replace_malloc.c:1138)
  WTF::Partitions::fastMalloc(unsigned long, char const*) (third_party/WebKit/Source/wtf/PartitionAlloc.h:736)
  blink::PersistentBase<blink::HeapHashSet<blink::Member<blink::Widget>, WTF::MemberHash<blink::Widget>, WTF::HashTraits<blink::Member<blink::Widget> > >, (blink::WeaknessPersistentConfiguration)0, (blink::CrossThreadnessPersistentConfiguration)0>::operator new(unsigned long) (/mnt/data/b/build/slave/chromium-rel-linux-valgrind-tests-2/build/src/out/Release/extensions_unittests)
  blink::widgetsPendingTemporaryRemovalFromParent() (third_party/WebKit/Source/core/html/HTMLFrameOwnerElement.cpp:53)
  blink::HTMLFrameOwnerElement::UpdateSuspendScope::performDeferredWidgetTreeOperations() (third_party/WebKit/Source/core/html/HTMLFrameOwnerElement.cpp:91)
  blink::HTMLFrameOwnerElement::UpdateSuspendScope::~UpdateSuspendScope() (third_party/WebKit/Source/core/html/HTMLFrameOwnerElement.cpp:103)


Leak_DefinitelyLost
16 bytes in 1 blocks are definitely lost in loss record 347 of 2,713
  malloc (m_replacemalloc/vg_replace_malloc.c:1138)
  WTF::Partitions::fastMalloc(unsigned long, char const*) (third_party/WebKit/Source/wtf/PartitionAlloc.h:736)
  blink::PersistentBase<blink::HeapHashSet<blink::WeakMember<blink::Document>, WTF::WeakMemberHash<blink::Document>, WTF::HashTraits<blink::WeakMember<blink::Document> > >, (blink::WeaknessPersistentConfiguration)0, (blink::CrossThreadnessPersistentConfiguration)0>::operator new(unsigned long) (/mnt/data/b/build/slave/chromium-rel-linux-valgrind-tests-2/build/src/out/Release/extensions_unittests)
  blink::Document::liveDocumentSet() (third_party/WebKit/Source/core/dom/Document.cpp:366)
  blink::Document::Document(blink::DocumentInit const&, unsigned char) (third_party/WebKit/Source/core/dom/Document.cpp:509)
  blink::HTMLDocument::HTMLDocument(blink::DocumentInit const&, unsigned char) (third_party/WebKit/Source/core/html/HTMLDocument.cpp:71)


Original issue's description:
> Improve DEFINE_STATIC_LOCAL()'s handling of Blink GCed objects.
> 
> Extend DEFINE_STATIC_LOCAL() to automatically wrap up heap objects
> being exposed as static singletons -- the wrapping happening by
> way of a Persistent<>.
> 
> With that in place, simplify various uses of DEFINE_STATIC_LOCAL()
> along with phasing out the use of DEFINE_STATIC_REF_WILL_BE_PERSISTENT()
> entirely.
> 
> R=haraken
> BUG=585328
> 
> Committed: https://crrev.com/18dc8ecff5ba68d28fc536f723ae3c57eafa1b4e
> Cr-Commit-Position: refs/heads/master@{#384887}
> 
> Committed: https://crrev.com/6b2e026b1c11833d558c8fd5c9d427f04ec3757b
> Cr-Commit-Position: refs/heads/master@{#384904}

TBR=oilpan-reviews@chromium.org,haraken@chromium.org,sigbjornf@opera.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=585328

[Jeffrey Yasskin, 2016-04-05 20:33:15]

Created Revert of Improve DEFINE_STATIC_LOCAL()'s handling of Blink GCed
objects.

[commit-bot: I haz the power, 2016-04-05 20:33:41]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1862513004/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1862513004/1

[commit-bot: I haz the power, 2016-04-05 20:49:45]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-04-05 20:49:46]

Try jobs failed on following builders:
  android_compile_dbg on tryserver.chromium.android (JOB_FAILED,
https://build.chromium.org/p/tryserver.chromium.android/builders/android_comp...)