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

blimp/client/input/blimp_input_manager.cc

Index: blimp/client/input/blimp_input_manager.cc
diff --git a/blimp/client/input/blimp_input_manager.cc b/blimp/client/input/blimp_input_manager.cc
index dedfac699cc97a999d4067d86ca063be799d0357..fbbfe61129583849c0d9c3c1c83b11059ae71e2b 100644
--- a/blimp/client/input/blimp_input_manager.cc
+++ b/blimp/client/input/blimp_input_manager.cc
@@ -11,6 +11,7 @@
 #include "ui/events/gesture_detection/gesture_provider_config_helper.h"
 
 namespace blimp {
+namespace client {
 
 scoped_ptr<BlimpInputManager> BlimpInputManager::Create(
       BlimpInputManagerClient* client,
@@ -152,4 +153,5 @@ bool BlimpInputManager::IsCompositorThread() const {
   return compositor_task_runner_->BelongsToCurrentThread();
 }
 
+}  // namespace client
 }  // namespace blimp