Run clang-format on Core

This copies over formatting changes from the Widevine CDM repository
that resulted from running clang-format with Google style on the
shared core/ directory. It also copies over some rewordings of log
messages that were made at the same time.

Aside from the changed log messages, this should not affect behavior
or functionality.

Change-Id: I69c57c188f7a79f30fa3517afeed17365929b6b6

libwvdrmengine/cdm/core/include/clock.h

@@ -11,7 +11,6 @@ namespace wvcdm {
 
 // Provides time related information. The implementation is platform dependent.
 class Clock {
-
  public:
   Clock() {}
   virtual ~Clock() {}