e0fbca9fb0
Until we have comprehensive E2E tests, it's too risky to change the reflector_host Misko wrote before final. But google3 uses path mapping and needs all imports to be and all paths to be canonicalized to the longest rootDir. This change introduces a subclass of ReflectorHost with overrides for methods that differ. After final (or when we have good tests), we'll refactor them back into one class.