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/log.h

@@ -2,8 +2,8 @@
 //
 // Log - Platform independent interface for a Logging class
 //
-#ifndef CDM_BASE_LOG_H_
-#define CDM_BASE_LOG_H_
+#ifndef WVCDM_CORE_LOG_H_
+#define WVCDM_CORE_LOG_H_
 
 namespace wvcdm {
 
@@ -17,13 +17,10 @@ typedef enum {
   LOG_VERBOSE
 } LogPriority;
 
-// Required to enable/disable verbose logging (LOGV) in Chromium. In Chromium,
-// verbose logging level is controlled using command line switches --v (global)
-// or --vmodule (per module). This function calls logging::InitLogging to
-// initialize logging, which should have already been included in most Chromium
-// based binaries. However, it is typically not included by default in
-// unittests, in particular, the unittests in CDM core need to call InitLogging
-// to be able to control verbose logging in command line.
+// Enable/disable verbose logging (LOGV).
+// This function is supplied for cases where the system layer does not
+// initialize logging.  This is also needed to initialize logging in
+// unit tests.
 void InitLogging(int argc, const char* const* argv);
 
 void Log(const char* file, int line, LogPriority level, const char* fmt, ...);
@@ -37,4 +34,4 @@ void Log(const char* file, int line, LogPriority level, const char* fmt, ...);
 
 };  // namespace wvcdm
 
-#endif  // CDM_BASE_LOG_H_
+#endif  // WVCDM_CORE_LOG_H_