src: rename namespace as chronochat

Change-Id: Idf390b1b2047c912735014d078ce099cf95026e6
diff --git a/src/trust-tree-scene.cpp b/src/trust-tree-scene.cpp
index dc2d802..718b207 100644
--- a/src/trust-tree-scene.cpp
+++ b/src/trust-tree-scene.cpp
@@ -17,7 +17,7 @@
 #include <memory>
 #endif
 
-namespace chronos {
+namespace chronochat {
 
 static const double Pi = 3.14159265358979323846264338327950288419717;
 
@@ -103,7 +103,7 @@
   }
 }
 
-} //namespace chronos
+} //namespace chronochat
 
 #if WAF
 #include "trust-tree-scene.moc"