https://bugs.webkit.org/show_bug.cgi?id=96405

Reviewed by Yury Semikhatsky.

This instrumentation is solving the problem with substrings and removes traits based code which is hard to upstream.

Source/WebCore:

* dom/WebCoreMemoryInstrumentation.cpp:
(WebCore):
* dom/WebCoreMemoryInstrumentation.h:
(WebCore):

* dom/WebCoreMemoryInstrumentation.cpp:
(WebCore):
* dom/WebCoreMemoryInstrumentation.h:
(WebCore):
* inspector/MemoryInstrumentationImpl.cpp:
(WebCore::MemoryInstrumentationImpl::countObjectSize):
* platform/SharedBuffer.cpp:
(WebCore::SharedBuffer::reportMemoryUsage):

Source/WebKit/chromium:

Tested by webkit_unit_tests.

* tests/MemoryInstrumentationTest.cpp:
(WebCore::InstrumentedUndefined::reportMemoryUsage):
(WebCore::TEST):

Source/WTF:

Tested by webkit_unit_tests.

* wtf/MemoryInstrumentation.h:
(WebCore):
(WebCore::MemoryInstrumentation::addRootObject):
(WebCore::MemoryObjectInfo::reportObjectInfo):
(WebCore::MemoryClassInfo::MemoryClassInfo):
* wtf/text/AtomicString.h:
(AtomicString):
(WTF::AtomicString::reportMemoryUsage):
* wtf/text/StringImpl.h:
(StringImpl):
(WTF::StringImpl::reportMemoryUsage):
* wtf/text/WTFString.h:
(String):
(WTF::String::reportMemoryUsage):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@128279 268f45cc-cd09-0410-ab3c-d52691b4dbfc