test HTMLTableAccessible::IsProbablyForLayout implementation

Mozilla Bug 495388 Mozilla Bug 690222 Mozilla Bug 696975

Sender	Subject	Date
Marco	Test	June 12
David	Another test	June 12
Alex	Third test	June 12

Cell1

cell2

Sender	Subject	Date
Marco	Test	June 12
David	Another test	June 12
Alex	Third test	June 12

Cell1

cell2

This is a table
Cell1	cell2


Cell1	cell2

Cell1	cell2

Cell1

cell2

Cell1

cell2

Cell1

cell2

Cell1	cell2

table6.2 cell

table6.2.2 cell

table6.2.3 cell1

table6.3 cell1

table6.3 cell2

abbr

This is a really long text (tiarlt) inside layout table

Cell

Row1

Row2

Col1

Col2

Col3

Col4

Col5

Col1	Col2	Col3	Col4	Col5
Col1	Col2	Col3	Col4	Col5

Col1	Col2	Col3
Col1	Col2	Col3
Col1	Col2	Col3
Col1	Col2	Col3
Col1	Col2	Col3
Col1	Col2	Col3
Col1	Col2	Col3
Col1	Col2	Col3
Col1	Col2	Col3
Col1	Col2	Col3
Col1	Col2	Col3
Col1	Col2	Col3
Col1	Col2	Col3
Col1	Col2	Col3
Col1	Col2	Col3
Col1	Col2	Col3
Col1	Col2	Col3
Col1	Col2	Col3
Col1	Col2	Col3
Col1	Col2	Col3
Col1	Col2	Col3

Col1	Col2	Col3
Col1	Col2	Col3

Col1	Col2	Col3
Col1	Col2	Col3

Marco	Test	June 12
David	Another test	June 12
Alex	Third test	June 12

Cell1

Cell2

table
Cell

Cell

Cell

Cell

Cell

Cell

Cell1

cell2

Tab 1	Tab 2
Hello

Row1

Row2

\begin{matrix} 1 & 0 \\ 0 & 1 \end{matrix}