Convert NOTIMPLs into a bug.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/155258

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@20274 0039d316-1c4b-4281-b951-d872f2087c98

base/process_util_linux.cc

@@ -261,7 +261,7 @@ size_t ProcessMetrics::GetPagefileUsage() const {
 }
 
 size_t ProcessMetrics::GetPeakPagefileUsage() const {
-  NOTIMPLEMENTED();
+  // http://crbug.com/16251
   return 0;
 }
 
@@ -278,17 +278,17 @@ size_t ProcessMetrics::GetWorkingSetSize() const {
 }
 
 size_t ProcessMetrics::GetPeakWorkingSetSize() const {
-  NOTIMPLEMENTED();
+  // http://crbug.com/16251
   return 0;
 }
 
 size_t ProcessMetrics::GetPrivateBytes() const {
-  NOTIMPLEMENTED();
+  // http://crbug.com/16251
   return 0;
 }
 
 bool ProcessMetrics::GetWorkingSetKBytes(WorkingSetKBytes* ws_usage) const {
-  NOTIMPLEMENTED();
+  // http://crbug.com/16251
   return false;
 }