Fix/suppress system/apex google-explicit-constructor warnings

* Add explicit to conversion constructors/operators
* Use NOLINT or NOLINTNEXTLINE to suppress warnings on intended converters
* Avoid unnecessary construction of Status object in apexd.cpp

Bug: 28341362
Test: make with WITH_TIDY=1 DEFAULT_GLOBAL_TIDY_CHECKS=-*,google-explicit-constructor
Change-Id: Ibb213b22e734fcfe5abf53f28b4f532f4f109098
4 files changed
tree: 8232227cf17857a71e6eafe684cac06f394637dd
  1. apexd/
  2. apexer/
  3. proto/
  4. tests/
  5. OWNERS
  6. PREUPLOAD.cfg