spec: fix wiki_and_tiny_teacher_wysiwyg_spec specs to run in chrome

Test Plan:
- Code review (Pedro thats you!)
- Pass Jenkins

Change-Id: I7881c52309b20c54034996b326ba898ebb8ddaf8
Reviewed-on: https://gerrit.instructure.com/98372
Tested-by: Jenkins
Reviewed-by: August Thornton <august@instructure.com>
Product-Review: Matt Fairbourn <mfairbourn@instructure.com>
QA-Review: Matt Fairbourn <mfairbourn@instructure.com>

spec/selenium/wiki_and_tiny_teacher_wysiwyg_spec.rb

@@ -71,7 +71,10 @@ describe "Wiki pages and Tiny WYSIWYG editor features" do
       text = "<ul><li>1</li><li>2</li><li>3</li></ul>"
       wysiwyg_state_setup(text, html: true)
 
+      # editor window needs focus in chrome to enable bullet list button
+      f("form.edit-form .edit-content").click if driver.browser == :chrome
       f(".mce-i-bullist").click
+
       in_frame wiki_page_body_ifr_id do
         expect(f("#tinymce")).not_to contain_css('li')
       end
@@ -90,7 +93,10 @@ describe "Wiki pages and Tiny WYSIWYG editor features" do
       text = "<ol><li>1</li><li>2</li><li>3</li></ol>"
       wysiwyg_state_setup(text, html: true)
 
+      # editor window needs focus in chrome to enable number list button
+      f("form.edit-form .edit-content").click if driver.browser == :chrome
       f('.mce-i-numlist').click
+
       in_frame wiki_page_body_ifr_id do
         expect(f("#tinymce")).not_to contain_css('li')
       end