Fixes BrowserViewHostedAppTest.Layout when using MD

ui/base/resource/material_design/material_design_controller.cc

Index: ui/base/resource/material_design/material_design_controller.cc
diff --git a/ui/base/resource/material_design/material_design_controller.cc b/ui/base/resource/material_design/material_design_controller.cc
index b19935e49621e25eccddff29621fe25a9afcdd99..cf004e9727b339222d665904390b1e11af2c22f1 100644
--- a/ui/base/resource/material_design/material_design_controller.cc
+++ b/ui/base/resource/material_design/material_design_controller.cc
@@ -43,10 +43,7 @@ void MaterialDesignController::InitializeMode() {
   } else if (switch_value == switches::kTopChromeMDNonMaterial) {
     SetMode(Mode::NON_MATERIAL);
   } else {
-    LOG(ERROR) << "Invalid value='" << switch_value
-               << "' for command line switch '" << switches::kTopChromeMD
-               << "'.";
-    SetMode(Mode::NON_MATERIAL);
+    SetMode(Mode::MATERIAL_NORMAL);
   }
 #endif  // !defined(ENABLE_TOPCHROME_MD)
 }