8145 Reland “Add support for trace counters with variable arguments and instrument the raster cache.” (cla: yes)

8147 Add “full-dart-debug” that disabled optimizations in the Dart VM. (cla: yes)

8148 Add dump-shader-skp switch to help ShaderWarmUp (cla: yes)

8149 Encode scroll motion events in the Android touch processor (cla: yes)

8150 Disable build_ios task due to lack of credits. (cla: yes)

8151 [Skia] Rollback Skia to 29d5dec9a0783a033b921dc483fb98d565d684f6 (cla: yes)

8153 Revert “Disable build_ios task due to lack of credits.” (cla: yes)