cros-md: Remove the non-MD immersive mode code paths

chrome/browser/ui/views/frame/browser_view_layout_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/views/frame/browser_view_layout.h"
 
 #include "base/macros.h"
 #include "chrome/browser/ui/views/frame/browser_view.h"
 #include "chrome/browser/ui/views/frame/browser_view_layout_delegate.h"
 #include "chrome/browser/ui/views/frame/contents_layout_manager.h"
@@ skipping 81 matching lines @@
 
 class MockImmersiveModeController : public ImmersiveModeController {
  public:
   MockImmersiveModeController() : ImmersiveModeController(Type::STUB) {}
   ~MockImmersiveModeController() override {}
 
   // ImmersiveModeController overrides:
   void Init(BrowserView* browser_view) override {}
   void SetEnabled(bool enabled) override {}
   bool IsEnabled() const override { return false; }
-  bool ShouldHideTabIndicators() const override { return false; }
   bool ShouldHideTopViews() const override { return false; }
   bool IsRevealed() const override { return false; }
   int GetTopContainerVerticalOffset(
       const gfx::Size& top_container_size) const override {
     return 0;
   }
   ImmersiveRevealedLock* GetRevealedLock(AnimateReveal animate_reveal) override
       WARN_UNUSED_RESULT {
     return nullptr;
   }
@@ skipping 138 matching lines @@
   const int kBottom = 500;
   EXPECT_EQ(kBottom, layout()->LayoutDownloadShelf(kBottom));
 
   // Download shelf layout moves up the bottom edge and sets visibility.
   delegate()->set_download_shelf_needs_layout(true);
   download_shelf->SetVisible(false);
   EXPECT_EQ(450, layout()->LayoutDownloadShelf(kBottom));
   EXPECT_TRUE(download_shelf->visible());
   EXPECT_EQ("0,450 0x50", download_shelf->bounds().ToString());
 }