Bug 1583462 - [wdspec] Fix webdriver/tests/take_*_screenshot/iframe.py for Fission. r=webdriver-reviewers,maja_zf

Shorten the text as used in the iframe to prevent a rendering issue
between the letters "n" and "i" in Firefox when Fission is enabled.

Differential Revision: https://phabricator.services.mozilla.com/D51059

--HG--
extra : moz-landing-system : lando

testing/web-platform/meta/webdriver/tests/take_element_screenshot/iframe.py.ini

@@ -1,5 +0,0 @@
-[iframe.py]
-  [test_source_origin[cross_origin\]]
-    expected:
-      if fission and (os == "win") and (processor == "x86_64"): FAIL
-

testing/web-platform/meta/webdriver/tests/take_screenshot/iframe.py.ini

@@ -1,5 +0,0 @@
-[iframe.py]
-  [test_source_origin[cross_origin\]]
-    expected:
-      if fission and (os == "win") and (processor == "x86_64"): FAIL
-

testing/web-platform/tests/webdriver/tests/take_element_screenshot/iframe.py

@@ -18,7 +18,7 @@ DEFAULT_CSS_STYLE = """
     </style>
 """
 
-DEFAULT_CONTENT = "<div>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</div>"
+DEFAULT_CONTENT = "<div>Lorem ipsum dolor sit amet.</div>"
 
 
 def take_element_screenshot(session, element_id):

testing/web-platform/tests/webdriver/tests/take_screenshot/iframe.py

@@ -18,7 +18,7 @@ DEFAULT_CSS_STYLE = """
     </style>
 """
 
-DEFAULT_CONTENT = "<div>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</div>"
+DEFAULT_CONTENT = "<div>Lorem ipsum dolor sit amet.</div>"
 
 
 def take_screenshot(session):