7325 Minor refactoring of dynamic patching code. (cla: yes)

7327 Give more control over when dynamic patches get downloaded and installed. (cla: yes)

7346 Make ParagraphConstraints have const constructor (cla: yes)

7354 Preparing to remove SK_SUPPORT_LEGACY_PAINT_TEXTMEASURE (cla: yes)

7360 Fix typo clas -> class (cla: yes)

7363 Roll Dart to version ec86471ccc47a62df8b4009e1fb37c66ff9dc91b (cla: yes)

7370 [HR] Documentation cleanup (cla: yes)

7371 Test SDK roll (cla: yes)

7374 Revert “Test SDK roll” (cla: yes)