Revert of Upstream Chrome on iOS source code [11/11].

ios/chrome/browser/ui/tabs/BUILD.gn

Index: ios/chrome/browser/ui/tabs/BUILD.gn
diff --git a/ios/chrome/browser/ui/tabs/BUILD.gn b/ios/chrome/browser/ui/tabs/BUILD.gn
index 1f607c1890dc55d01422e3a029fbe8367e428e16..8f2fb48745535cfb88e43fa6726974d167e6a527 100644
--- a/ios/chrome/browser/ui/tabs/BUILD.gn
+++ b/ios/chrome/browser/ui/tabs/BUILD.gn
@@ -40,75 +40,3 @@
     "{{bundle_resources_dir}}/{{source_file_part}}",
   ]
 }
-
-source_set("tabs") {
-  sources = [
-    "tab_strip_controller+tab_switcher_animation.h",
-    "tab_strip_controller.h",
-    "tab_strip_controller.mm",
-    "tab_strip_controller_private.h",
-    "tab_strip_view.h",
-    "tab_strip_view.mm",
-    "tab_util.h",
-    "tab_util.mm",
-    "tab_view.h",
-    "tab_view.mm",
-    "target_frame_cache.h",
-    "target_frame_cache.mm",
-  ]
-  deps = [
-    "//base",
-    "//base:i18n",
-    "//ios/chrome/app/strings",
-    "//ios/chrome/browser",
-    "//ios/chrome/browser/browser_state",
-    "//ios/chrome/browser/tabs",
-    "//ios/chrome/browser/ui",
-    "//ios/chrome/browser/ui/colors",
-    "//ios/chrome/browser/ui/commands",
-    "//ios/chrome/browser/ui/tabs:resources",
-    "//ios/chrome/browser/ui/util",
-    "//ios/third_party/material_components_ios",
-    "//ios/web",
-    "//third_party/google_toolbox_for_mac",
-    "//ui/base",
-    "//ui/gfx",
-  ]
-  libs = [ "UIKit.framework" ]
-}
-
-source_set("unit_tests") {
-  testonly = true
-  sources = [
-    "tab_strip_controller_unittest.mm",
-  ]
-  deps = [
-    ":tabs",
-    "//base",
-    "//ios/chrome/browser/browser_state:test_support",
-    "//ios/chrome/browser/sessions:test_support",
-    "//ios/chrome/browser/tabs",
-    "//ios/chrome/browser/ui",
-    "//ios/web:test_support",
-    "//testing/gtest",
-    "//third_party/ocmock",
-  ]
-}
-
-source_set("eg_tests") {
-  testonly = true
-  sources = [
-    "tab_strip_egtest.mm",
-  ]
-  deps = [
-    "//ios/chrome/app/strings",
-    "//ios/chrome/browser",
-    "//ios/chrome/browser/ui",
-    "//ios/chrome/browser/ui/tabs",
-    "//ios/chrome/test/app:test_support",
-    "//ios/chrome/test/earl_grey:test_support",
-    "//ios/third_party/earl_grey",
-    "//ui/base",
-  ]
-  libs = [ "XCTest.framework" ]
-}