Remove monitor_finder_mac.h/mm, which was used to support PPB_Flash_DRM.

Bug: 1064652
Change-Id: Ib352eb91dd6fe8d883fbbfbc63d87378510c1b3d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2523571
Commit-Queue: Nico Weber <thakis@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#825118}

chrome/browser/BUILD.gn

@@ -5878,8 +5878,6 @@ static_library("browser") {
       "renderer_host/pepper/chrome_browser_pepper_host_factory.h",
       "renderer_host/pepper/device_id_fetcher.cc",
       "renderer_host/pepper/device_id_fetcher.h",
-      "renderer_host/pepper/monitor_finder_mac.h",
-      "renderer_host/pepper/monitor_finder_mac.mm",
       "renderer_host/pepper/pepper_isolated_file_system_message_filter.cc",
       "renderer_host/pepper/pepper_isolated_file_system_message_filter.h",
     ]

chrome/browser/renderer_host/pepper/monitor_finder_mac.h

-// Copyright 2014 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 CHROME_BROWSER_RENDERER_HOST_PEPPER_MONITOR_FINDER_MAC_H_
-#define CHROME_BROWSER_RENDERER_HOST_PEPPER_MONITOR_FINDER_MAC_H_
-
-#include <ApplicationServices/ApplicationServices.h>
-#include <stdint.h>
-
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/synchronization/lock.h"
-
-// MonitorFinder maps a RenderFrameHost to the display ID on which the widget
-// is painting. This class operates on the IO thread while the RenderFrameHost
-// is on the UI thread, so the value returned by GetMonitor() may be 0 until
-// the information can be retrieved asynchronously.
-class MonitorFinder : public base::RefCountedThreadSafe<MonitorFinder> {
- public:
-  MonitorFinder(int process_id, int render_frame_id);
-
-  // Gets the native display ID for the <process_id, render_frame_id> tuple.
-  int64_t GetMonitor();
-
-  // Checks if the given |monitor_id| represents a built-in display.
-  static bool IsMonitorBuiltIn(int64_t monitor_id);
-
- private:
-  friend class base::RefCountedThreadSafe<MonitorFinder>;
-  ~MonitorFinder();
-
-  // Method run on the UI thread to get the display information.
-  void FetchMonitorFromWidget();
-
-  const int process_id_;
-  const int render_frame_id_;
-
-  base::Lock mutex_;  // Protects the two members below.
-  // Whether one request to FetchMonitorFromWidget() has been made already.
-  bool request_sent_;
-  // The native display ID for the RenderFrameHost.
-  CGDirectDisplayID display_id_;
-
-  DISALLOW_COPY_AND_ASSIGN(MonitorFinder);
-};
-
-#endif  // CHROME_BROWSER_RENDERER_HOST_PEPPER_MONITOR_FINDER_MAC_H_

chrome/browser/renderer_host/pepper/monitor_finder_mac.mm

-// Copyright 2014 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/renderer_host/pepper/monitor_finder_mac.h"
-
-#import <Cocoa/Cocoa.h>
-
-#include "base/bind.h"
-#include "content/public/browser/browser_task_traits.h"
-#include "content/public/browser/browser_thread.h"
-#include "content/public/browser/render_frame_host.h"
-
-MonitorFinder::MonitorFinder(int process_id, int render_frame_id)
-    : process_id_(process_id),
-      render_frame_id_(render_frame_id),
-      request_sent_(false),
-      display_id_(kCGNullDirectDisplay) {}
-
-MonitorFinder::~MonitorFinder() {}
-
-int64_t MonitorFinder::GetMonitor() {
-  {
-    // The plugin may call this method several times, so avoid spamming the UI
-    // thread with requests by only allowing one outstanding request at a time.
-    base::AutoLock lock(mutex_);
-    if (request_sent_)
-      return display_id_;
-    request_sent_ = true;
-  }
-
-  content::GetUIThreadTaskRunner({})->PostTask(
-      FROM_HERE, base::BindOnce(&MonitorFinder::FetchMonitorFromWidget, this));
-  return display_id_;
-}
-
-// static
-bool MonitorFinder::IsMonitorBuiltIn(int64_t display_id) {
-  return CGDisplayIsBuiltin(display_id);
-}
-
-void MonitorFinder::FetchMonitorFromWidget() {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-  content::RenderFrameHost* rfh =
-      content::RenderFrameHost::FromID(process_id_, render_frame_id_);
-  if (!rfh)
-    return;
-
-  gfx::NativeView native_view = rfh->GetNativeView();
-  NSWindow* window = [native_view.GetNativeNSView() window];
-  NSScreen* screen = [window screen];
-  CGDirectDisplayID display_id =
-      [[[screen deviceDescription] objectForKey:@"NSScreenNumber"] intValue];
-
-  base::AutoLock lock(mutex_);
-  request_sent_ = false;
-  display_id_ = display_id;
-}