Bug 1046061 - Make pinyin levarge the original page switching functions.
 - Use keycode 65 to represent "'" so that pinyin won't have to know which
page it is in.
Merge pull request #22347 from RudyLu/keyboard/bug1046061-multiple_symbol_pages_2

Bug 1046061 - Make pinyin levarge the original page switching functions.
r=timdream, luke-chang.