Update monochrome_apk_checker_test.py to work with internal Chrome

This CL adds an exception for accent_font.xml. Internal webview
contains accent_font.xml but not internal monochrome because
accent_font.xml is a resource alias in internal monochrome.

BUG=1115604

Change-Id: I9d6b96625baff4a9903b0e0e8e19c2c5c8f8cc89
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2462712Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Commit-Queue: Peter Kotwicz <pkotwicz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#815617}

chrome/android/monochrome/scripts/monochrome_apk_checker_test.py

@@ -38,8 +38,10 @@ CHROME_SPECIFIC = BuildFileMatchRegex(
     r'lib/.*/crazy\.libchrome\.so',
     r'lib/.*/crazy\.libchrome\.align',
     r'lib/.*/gdbserver',
-     # Monochrome doesn't have any res directories whose api number is less
-     # than v24.
+    # R.font.accent_font is an alias in internal Chrome.
+    r'res/.*/accent_font.xml',
+    # Monochrome doesn't have any res directories whose api number is less
+    # than v24.
     r'res/.*-v1\d/.*\.xml',
     r'res/.*-v2[0-3]/.*\.xml',
     r'META-INF/.*',