Revert "[LayoutNG] Dump NGPhysicalTextFragment"

This reverts commit 76361c1aa7af1296ec50b72d6b853561d6f30c66.

Reason for revert: This change has lead to a compilation failure on WinMSCV64 (dbg) due to the added loop in layouttext.cpp having a non-conditional break, leading to there being unreachable code.

First failure: https://ci.chromium.org/buildbot/chromium.win/WinMSVC64%20%28dbg%29/1970

crbug.com/802222

Original change's description:
> [LayoutNG] Dump NGPhysicalTextFragment
> 
> This patch dumps NGPhysicalTextFragment associated with LayoutText
> in the same format as InlineTextBox to help reviewing test failures
> in LayoutNG.
> 
> LayoutTreeAsText supports RootInlineBox and InlineFlowBox, but they
> are not supported for LayoutNG yet. They may be added if they appear
> a lot in the text failures, but I have not reviewed them yet.
> 
> Bug: 591099
> Cq-Include-Trybots: master.tryserver.chromium.linux:linux_layout_tests_layout_ng
> Change-Id: I80d6540794cc3630108e02d63a4f749e76e505d1
> Reviewed-on: https://chromium-review.googlesource.com/864962
> Commit-Queue: Koji Ishii <kojii@chromium.org>
> Reviewed-by: Xiaocheng Hu <xiaochengh@chromium.org>
> Reviewed-by: Emil A Eklund <eae@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#529371}

TBR=eae@chromium.org,kojii@chromium.org,xiaochengh@chromium.org,ikilpatrick@chromium.org

Change-Id: I872fb0b7db858cb751ab092cd3a658c50618304c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 591099
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_layout_tests_layout_ng
Reviewed-on: https://chromium-review.googlesource.com/868490
Reviewed-by: Jonathan Ross <jonross@chromium.org>
Commit-Queue: Jonathan Ross <jonross@chromium.org>
Cr-Commit-Position: refs/heads/master@{#529420}
111 files changed