ash: Rename LauncherModel to ShelfModel.

ash/test/test_launcher_delegate.cc

Index: ash/test/test_launcher_delegate.cc
diff --git a/ash/test/test_launcher_delegate.cc b/ash/test/test_launcher_delegate.cc
index 186798080e39b3b3c3be1969c0e2a6f2e6851901..78c69fb60421101b570d56f1c5d28e9f38e61778 100644
--- a/ash/test/test_launcher_delegate.cc
+++ b/ash/test/test_launcher_delegate.cc
@@ -5,7 +5,7 @@
 #include "ash/test/test_launcher_delegate.h"
 
 #include "ash/launcher/launcher_item_delegate_manager.h"
-#include "ash/launcher/launcher_model.h"
+#include "ash/shelf/shelf_model.h"
 #include "ash/shell.h"
 #include "ash/test/test_launcher_item_delegate.h"
 #include "base/strings/string_util.h"
@@ -18,7 +18,7 @@ namespace test {
 
 TestLauncherDelegate* TestLauncherDelegate::instance_ = NULL;
 
-TestLauncherDelegate::TestLauncherDelegate(LauncherModel* model)
+TestLauncherDelegate::TestLauncherDelegate(ShelfModel* model)
     : model_(model) {
   CHECK(!instance_);
   instance_ = this;