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

blimp/client/compositor/test/dummy_layer_driver.h

Index: blimp/client/compositor/test/dummy_layer_driver.h
diff --git a/blimp/client/compositor/test/dummy_layer_driver.h b/blimp/client/compositor/test/dummy_layer_driver.h
index b057764a2c637289106c15d62997f1de9da35928..9c7158051bea39974ce36844947d8064ce59af0e 100644
--- a/blimp/client/compositor/test/dummy_layer_driver.h
+++ b/blimp/client/compositor/test/dummy_layer_driver.h
@@ -14,6 +14,7 @@ class Layer;
 }
 
 namespace blimp {
+namespace client {
 
 // A test class that drives changes to a layer every 16ms.  This can be used to
 // make sure the compositor is rendering layers properly.  In this case, colors
@@ -38,6 +39,7 @@ class DummyLayerDriver {
   DISALLOW_COPY_AND_ASSIGN(DummyLayerDriver);
 };
 
+}  // namespace client
 }  // namespace blimp
 
 #endif  // BLIMP_CLIENT_COMPOSITOR_TEST_DUMMY_LAYER_DRIVER_H_