Word-Spacing in InlineBox RTL scenario not to ignore if first character is space

InlineFlowBox, sets word spacing first if in LTR scenario. In RTL scenario first logicalLeft should be set prior to setting word-spacing length.

RenderBlockLineLayout, sets needsWordSpacing as true to not ignore space if first character.

BUG=344873
R=behdad,eae, aharon
TEST=fast/text/international/bidi-word-spacing.html

Review URL: https://codereview.chromium.org/529753002

git-svn-id: svn://svn.chromium.org/blink/trunk@181636 bbb929c8-8fbe-4397-9dbb-9b2b20218538