Revert "Rewrite parseFrameSetListOfDimension to match HTML5"

Revert "Rewrite parseFrameSetListOfDimension to match HTML5"

The change has resulted in ASAN failures:
http://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20ASAN/builds/7635/steps/webkit_tests/logs/stdio

==2535==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x604000176835 at pc 0x5b315d5 bp 0x7fffeec0d570 sp 0x7fffeec0d568
READ of size 1 at 0x604000176835 thread T0 (content_shell)
       #0 0x5b315d4 in WebCore::Length WebCore::parseDimension<unsigned char>(unsigned char const*, unsigned long, unsigned long) ../third_party/WebKit/Source/core/html/HTMLDimension.cpp:62:0
       #1 0x5b3111b in WebCore::parseDimension(WTF::String const&, unsigned long, unsigned long) ../third_party/WebKit/Source/core/html/HTMLDimension.cpp:97:0
       #2 0x5b30fab in WebCore::parseListOfDimensions(WTF::String const&) ../third_party/WebKit/Source/core/html/HTMLDimension.cpp:129:0
       #3 0x5a4ae7f in WebCore::HTMLFrameSetElement::parseAttribute(WebCore::QualifiedName const&, WTF::AtomicString const&) ../third_party/WebKit/Source/core/html/HTMLFrameSetElement.cpp:84:0

This reverts commit ac7e5c0cbc39fa3899dc556af24157e71a7d789b.

TBR=jchaffraix@chromium.org

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=154013

[apavlov, 2013-07-11 16:12:46]

Committed patchset #1 manually as r154013 (presubmit successful).

[Julien - ping for review, 2013-07-11 17:59:58]

On 2013/07/11 16:12:46, apavlov wrote:
> Committed patchset #1 manually as r154013 (presubmit successful).

LGTM, FWIW ClusterFuzz had also picked up the badness. As this must be blocking
the roll, it's better out of the tree, thanks!