[Blimp client] Move client code into blimp::client namespace

blimp/client/compositor/blimp_layer_tree_settings.cc

Index: blimp/client/compositor/blimp_layer_tree_settings.cc
diff --git a/blimp/client/compositor/blimp_layer_tree_settings.cc b/blimp/client/compositor/blimp_layer_tree_settings.cc
index 029e328c78ce21e38462472a33910cf1d1b49733..3dbc058ac37c646f5ffaa03663453e3ffa24e23f 100644
--- a/blimp/client/compositor/blimp_layer_tree_settings.cc
+++ b/blimp/client/compositor/blimp_layer_tree_settings.cc
@@ -17,6 +17,7 @@
 #include "ui/gl/gl_switches.h"
 
 namespace blimp {
+namespace client {
 
 // TODO(dtrainor): This is temporary to get the compositor up and running.
 // Much of this will either have to be pulled from the server or refactored to
@@ -105,4 +106,5 @@ void PopulateCommonLayerTreeSettings(cc::LayerTreeSettings* settings) {
   settings->use_compositor_animation_timelines = true;
 }
 
+}  // namespace client
 }  // namespace blimp