Make install-fonts a no-op, see what breaks.

This squashes all the previous commits and syncs to HEAD to include the
lint rule PR (web-platform-tests#18877)

.azure-pipelines.yml

@@ -78,7 +78,7 @@ jobs:
   - template: tools/ci/azure/pip_install.yml
     parameters:
       packages: virtualenv
-  - template: tools/ci/azure/install_fonts.yml
+#  - template: tools/ci/azure/install_fonts.yml
   - template: tools/ci/azure/install_certs.yml
   - template: tools/ci/azure/install_chrome.yml
   - template: tools/ci/azure/install_firefox.yml
@@ -320,7 +320,7 @@ jobs:
   - template: tools/ci/azure/pip_install.yml
     parameters:
       packages: virtualenv
-  - template: tools/ci/azure/install_fonts.yml
+#  - template: tools/ci/azure/install_fonts.yml
   - template: tools/ci/azure/install_certs.yml
   - template: tools/ci/azure/install_safari.yml
     parameters:
@@ -355,7 +355,7 @@ jobs:
   - template: tools/ci/azure/pip_install.yml
     parameters:
       packages: virtualenv
-  - template: tools/ci/azure/install_fonts.yml
+#  - template: tools/ci/azure/install_fonts.yml
   - template: tools/ci/azure/install_certs.yml
   - template: tools/ci/azure/install_safari.yml
   - template: tools/ci/azure/update_hosts.yml

docs/writing-tests/assumptions.md

@@ -11,7 +11,6 @@ tests can freely rely on these assumptions being true:
  * The initial value of `color` is `black`.
  * The user stylesheet is empty (except where indicated by the tests).
  * The device is interactive and uses scroll bars.
- * The device has the Ahem font installed.
  * The HTML `div` element is assigned `display: block;`, the
    `unicode-bidi` property may be declared, and no other property
    declarations.

lint.whitelist

@@ -842,4 +842,3 @@ AHEM SYSTEM FONT: css/vendor-imports/mozilla/mozilla-central-reftests/*
 # PR (https://github.com/web-platform-tests/wpt/pull/18702)
 AHEM SYSTEM FONT: infrastructure/assumptions/ahem-ref.html
 AHEM SYSTEM FONT: infrastructure/assumptions/ahem.html
-

tools/ci/azure/affected_tests.yml

@@ -11,7 +11,7 @@ steps:
 - template: pip_install.yml
   parameters:
     packages: virtualenv
-- template: install_fonts.yml
+#- template: install_fonts.yml
 - template: install_certs.yml
 - template: install_safari.yml
 - template: update_hosts.yml

tools/ci/azure/install_fonts.yml

@@ -1,5 +1,5 @@
-steps:
+#steps:
 # Installig Ahem in /Library/Fonts instead of using --install-fonts is a
 # workaround for https://github.com/web-platform-tests/wpt/issues/13803.
-- script: sudo cp fonts/Ahem.ttf /Library/Fonts
-  displayName: 'Install Ahem font'
+#- script: sudo cp fonts/Ahem.ttf /Library/Fonts
+#  displayName: 'Install Ahem font'

tools/wptrunner/wptrunner/browsers/firefox_android.py

@@ -56,7 +56,7 @@ def browser_kwargs(test_type, run_info_data, config, **kwargs):
             "stylo_threads": kwargs["stylo_threads"],
             "chaos_mode_flags": kwargs["chaos_mode_flags"],
             "config": config,
-            "install_fonts": kwargs["install_fonts"],
+            # "install_fonts": kwargs["install_fonts"],
             "tests_root": config.doc_root}
 
 
@@ -91,7 +91,7 @@ def __init__(self, logger, prefs_root, test_type, package_name="org.mozilla.geck
         self.package_name = package_name
         self.device_serial = device_serial
         self.tests_root = kwargs["tests_root"]
-        self.install_fonts = kwargs["install_fonts"]
+        # self.install_fonts = kwargs["install_fonts"]
         self.stackwalk_binary = kwargs["stackwalk_binary"]
 
     def start(self, **kwargs):
@@ -136,14 +136,14 @@ def start(self, **kwargs):
                 "layout.testing.overlay-scrollbars.always-visible": True,
             })
 
-        if self.install_fonts:
-            self.logger.debug("Copying Ahem font to profile")
-            font_dir = os.path.join(self.profile.profile, "fonts")
-            if not os.path.exists(font_dir):
-                os.makedirs(font_dir)
-            with open(os.path.join(self.tests_root, "fonts", "Ahem.ttf"), "rb") as src:
-                with open(os.path.join(font_dir, "Ahem.ttf"), "wb") as dest:
-                    dest.write(src.read())
+        # if self.install_fonts:
+        #     self.logger.debug("Copying Ahem font to profile")
+        #     font_dir = os.path.join(self.profile.profile, "fonts")
+        #     if not os.path.exists(font_dir):
+        #         os.makedirs(font_dir)
+        #     with open(os.path.join(self.tests_root, "fonts", "Ahem.ttf"), "rb") as src:
+        #         with open(os.path.join(font_dir, "Ahem.ttf"), "wb") as dest:
+        #             dest.write(src.read())
 
         self.leak_report_file = None