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

blimp/client/compositor/blimp_context_provider.h

Index: blimp/client/compositor/blimp_context_provider.h
diff --git a/blimp/client/compositor/blimp_context_provider.h b/blimp/client/compositor/blimp_context_provider.h
index 15f6deb92445fc5893c37ed02b4f9ed0e4a650b9..e34bad1529f2ae74397ea316156f957a109d69ef 100644
--- a/blimp/client/compositor/blimp_context_provider.h
+++ b/blimp/client/compositor/blimp_context_provider.h
@@ -17,6 +17,7 @@
 #include "ui/gl/gl_surface.h"
 
 namespace blimp {
+namespace client {
 
 // Helper class to provide a graphics context for the compositor.
 class BlimpContextProvider : public cc::ContextProvider {
@@ -59,6 +60,7 @@ class BlimpContextProvider : public cc::ContextProvider {
   DISALLOW_COPY_AND_ASSIGN(BlimpContextProvider);
 };
 
+}  // namespace client
 }  // namespace blimp
 
 #endif  // BLIMP_CLIENT_COMPOSITOR_BLIMP_CONTEXT_PROVIDER_H_