Clean comments, namespace, and variable names

This CL removes TODOs and email addresses from comments, unifies some
namespaces and cleans a few variable names.  It is a copy of multiple
CLs on the widevine side.

Change-Id: I1bb649096476a5001a56d746427399de6a88ff69

libwvdrmengine/cdm/core/include/policy_engine.h

@@ -1,7 +1,7 @@
 // Copyright 2013 Google Inc. All Rights Reserved.
 
-#ifndef CDM_BASE_POLICY_ENGINE_H_
-#define CDM_BASE_POLICY_ENGINE_H_
+#ifndef WVCDM_CORE_POLICY_ENGINE_H_
+#define WVCDM_CORE_POLICY_ENGINE_H_
 
 #include <string>
 
@@ -25,7 +25,7 @@ class PolicyEngine {
   // UpdateLicense/OnTimerEvent/BeginDecryption and may be out of sync
   // depending on the amount of time elapsed. The current decryption
   // status is not calculated to avoid overhead in the decryption path.
-  inline bool can_decrypt()         { return can_decrypt_; }
+  inline bool can_decrypt() { return can_decrypt_; }
 
   // OnTimerEvent is called when a timer fires. It notifies the Policy Engine
   // that the timer has fired and that it should check whether any events have
@@ -118,5 +118,4 @@ class PolicyEngine {
 
 }  // wvcdm
 
-#endif  // CDM_BASE_POLICY_ENGINE_H_
-
+#endif  // WVCDM_CORE_POLICY_ENGINE_H_