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

blimp/client/compositor/blimp_output_surface.h

Index: blimp/client/compositor/blimp_output_surface.h
diff --git a/blimp/client/compositor/blimp_output_surface.h b/blimp/client/compositor/blimp_output_surface.h
index a2d521e44bd72ff40255f7877e7a6aef9deecc48..f2535bdd877ba4beda935dbec79d08679126e6e0 100644
--- a/blimp/client/compositor/blimp_output_surface.h
+++ b/blimp/client/compositor/blimp_output_surface.h
@@ -11,6 +11,7 @@
 #include "cc/output/output_surface.h"
 
 namespace blimp {
+namespace client {
 
 // Minimal implementation of cc::OutputSurface.
 class BlimpOutputSurface : public cc::OutputSurface {
@@ -26,6 +27,7 @@ class BlimpOutputSurface : public cc::OutputSurface {
   DISALLOW_COPY_AND_ASSIGN(BlimpOutputSurface);
 };
 
+}  // namespace client
 }  // namespace blimp
 
 #endif  // BLIMP_CLIENT_COMPOSITOR_BLIMP_OUTPUT_SURFACE_H_