Create c/b/ui/cocoa/test and move test files to there

chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_unittest.mm

Index: chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_unittest.mm
diff --git a/chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_unittest.mm b/chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_unittest.mm
index c21c1b61ebed5c2e9ae423282c8ade8e9f2bd4ed..68972fac96a91044511d8291161195a000a5f5b3 100644
--- a/chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_unittest.mm
+++ b/chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_unittest.mm
@@ -7,12 +7,12 @@
 
 #include "base/mac/foundation_util.h"
 #include "base/mac/scoped_nsobject.h"
-#import "chrome/browser/ui/cocoa/cocoa_test_helper.h"
 #import "chrome/browser/ui/cocoa/location_bar/autocomplete_text_field.h"
 #import "chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_cell.h"
 #import "chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_editor.h"
 #import "chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_unittest_helper.h"
 #import "chrome/browser/ui/cocoa/location_bar/location_bar_decoration.h"
+#import "chrome/browser/ui/cocoa/test/cocoa_test_helper.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #import "testing/gtest_mac.h"
@@ -637,7 +637,7 @@ TEST_F(AutocompleteTextFieldTest, RightDecorationMouseDown) {
 // the cell, and the cell tests should test that the right things are
 // selected.  It's easier to mock the event here, though.  This code's
 // event-mockers might be worth promoting to |cocoa_test_event_utils.h| or
-// |cocoa_test_helper.h|.
+// |test/test/cocoa_test_helper.h|.
 TEST_F(AutocompleteTextFieldTest, DecorationMenu) {
   AutocompleteTextFieldCell* cell = [field_ cell];
   const NSRect bounds([field_ bounds]);