[fuchsia] Clean up unused WebEngineScreen an EXPORT macro.

- Remove the unused WebEngineScreen stub.
- Remove an errant BASE_EXPORT macro on cr_fuchsia::AgentManager.

Change-Id: I5546c78b9428b56a707fa1b059fb60e9875cd337
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1896393
Commit-Queue: Kevin Marshall <kmarshall@chromium.org>
Reviewed-by: Kevin Marshall <kmarshall@chromium.org>
Auto-Submit: Wez <wez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#713240}

fuchsia/base/agent_manager.h

@@ -17,7 +17,7 @@ namespace cr_fuchsia {
 
 // Connects to the ComponentContext service from the supplied ServiceDirectory,
 // and uses it to connect-to and manage one or more Agents used by the caller.
-class BASE_EXPORT AgentManager {
+class AgentManager {
  public:
   explicit AgentManager(const sys::ServiceDirectory* incoming);
   ~AgentManager();

fuchsia/engine/BUILD.gn

@@ -150,8 +150,6 @@ component("web_engine_core") {
     "browser/web_engine_net_log.h",
     "browser/web_engine_permission_manager.cc",
     "browser/web_engine_permission_manager.h",
-    "browser/web_engine_screen.cc",
-    "browser/web_engine_screen.h",
     "common/web_engine_content_client.cc",
     "common/web_engine_content_client.h",
     "common/web_engine_url_loader_throttle.cc",

fuchsia/engine/browser/web_engine_browser_main_parts.cc

@@ -16,7 +16,6 @@
 #include "fuchsia/engine/browser/context_impl.h"
 #include "fuchsia/engine/browser/web_engine_browser_context.h"
 #include "fuchsia/engine/browser/web_engine_devtools_controller.h"
-#include "fuchsia/engine/browser/web_engine_screen.h"
 #include "fuchsia/engine/switches.h"
 #include "gpu/command_buffer/service/gpu_switches.h"
 #include "ui/aura/screen_ozone.h"

fuchsia/engine/browser/web_engine_screen.cc

-// Copyright 2018 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 "fuchsia/engine/browser/web_engine_screen.h"
-
-#include "ui/display/display.h"
-
-WebEngineScreen::WebEngineScreen() {
-  const int64_t kDefaultDisplayId = 1;
-  display::Display display(kDefaultDisplayId);
-  ProcessDisplayChanged(display, /*is_primary=*/true);
-}
-
-WebEngineScreen::~WebEngineScreen() = default;

fuchsia/engine/browser/web_engine_screen.h

-// Copyright 2018 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.
-
-#ifndef FUCHSIA_ENGINE_BROWSER_WEB_ENGINE_SCREEN_H_
-#define FUCHSIA_ENGINE_BROWSER_WEB_ENGINE_SCREEN_H_
-
-#include "base/macros.h"
-
-#include "ui/display/screen_base.h"
-
-// display::Screen implementation for WebEngine on Fuchsia.
-class DISPLAY_EXPORT WebEngineScreen : public display::ScreenBase {
- public:
-  WebEngineScreen();
-  ~WebEngineScreen() override;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(WebEngineScreen);
-};
-
-#endif  // FUCHSIA_ENGINE_BROWSER_WEB_ENGINE_SCREEN_H_