Initial v17 Release

Headers and Unit tests have been updated to match the v17 spec.

Documentation can be found here:
https://developers.devsite.corp.google.com/widevine/drm/client/oemcrypto/v17

util/test/test_sleep.cpp

@@ -9,6 +9,9 @@
 #else
 #  include <sys/types.h>
 #endif
+#ifdef __APPLE__
+#  include <TargetConditionals.h>
+#endif
 
 #include <errno.h>
 #include <string.h>
@@ -19,7 +22,7 @@
 #include "clock.h"
 #include "log.h"
 
-namespace wvcdm {
+namespace wvutil {
 
 bool TestSleep::real_sleep_ = true;
 TestSleep::CallBack* TestSleep::callback_ = nullptr;
@@ -73,10 +76,13 @@ bool TestSleep::RollbackSystemTime(int seconds) {
     file_time.dwHighDateTime = long_time >> 32;
     if (!FileTimeToSystemTime(&file_time, &time)) return false;
     if (!SetSystemTime(&time)) return false;
+#elif TARGET_IPHONE_SIMULATOR || TARGET_OS_IPHONE
+    LOGE("iOS time rollback: cannot set system time.");
+    return false;
 #else
     auto time = std::chrono::system_clock::now();
     auto modified_time = time - std::chrono::seconds(seconds);
-    ;
+
     timespec time_spec;
     time_spec.tv_sec = std::chrono::duration_cast<std::chrono::seconds>(
                            modified_time.time_since_epoch())
@@ -140,6 +146,9 @@ bool TestSleep::CanChangeSystemTime() {
   }
   LOGE("Win32 time rollback: cannot set system time.");
   return false;
+#elif TARGET_IPHONE_SIMULATOR || TARGET_OS_IPHONE
+  LOGE("iOS time rollback: cannot set system time.");
+  return false;
 #else
   // Otherwise, the test needs to be run as root.
   const uid_t uid = getuid();
@@ -148,4 +157,4 @@ bool TestSleep::CanChangeSystemTime() {
   return false;
 #endif
 }
-}  // namespace wvcdm
+}  // namespace wvutil