TabManager: Set OOM scores via a new debugd interface on ChromeOS.

chrome/browser/memory/tab_manager_delegate_chromeos_unittest.cc

 // Copyright (c) 2012 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/memory/tab_manager_delegate_chromeos.h"
 
 #include <algorithm>
 #include <map>
 #include <string>
 #include <vector>
 
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
 #include "base/logging.h"
 #include "base/memory/weak_ptr.h"
+#include "base/message_loop/message_loop.h"
 #include "base/process/process_handle.h"
 #include "chrome/browser/chromeos/arc/arc_process.h"
 #include "chrome/browser/memory/tab_manager.h"
 #include "chrome/browser/memory/tab_stats.h"
 #include "chrome/common/url_constants.h"
+#include "chromeos/dbus/fake_debug_daemon_client.h"
 #include "components/arc/common/process.mojom.h"
 #include "components/arc/test/fake_arc_bridge_service.h"
 #include "components/exo/shell_surface.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/aura/window.h"
 #include "ui/wm/public/activation_client.h"
 #include "url/gurl.h"
 
 namespace memory {
 
@@ skipping 80 matching lines @@
     return killed_tabs_;
   }
 
   // unit test.
   void Clear() {
     killed_arc_processes_.clear();
     killed_tabs_.clear();
   }
 
  protected:
-  // Nullify the operation for unit test.
-  void SetOomScoreAdjForTabs(
-      const std::vector<std::pair<base::ProcessHandle, int>>& entries)
-      override {}
-
   bool KillArcProcess(const int nspid) override {
     killed_arc_processes_.push_back(nspid);
     return true;
   }
 
   bool KillTab(int64_t tab_id) override {
     killed_tabs_.push_back(tab_id);
     return true;
   }
 
+  chromeos::DebugDaemonClient* GetDebugDaemonClient() override {
+    return &debugd_client_;
+  }
+
  private:
+  chromeos::FakeDebugDaemonClient debugd_client_;
   std::vector<int> killed_arc_processes_;
   std::vector<int64_t> killed_tabs_;
 };
 
 class MockMemoryStat : public TabManagerDelegate::MemoryStat {
  public:
   MockMemoryStat() {}
   ~MockMemoryStat() override {}
 
   int TargetMemoryToFreeKB() override {
@@ skipping 13 matching lines @@
   void SetProcessPss(base::ProcessHandle pid, int pss) {
     process_pss_[pid] = pss;
   }
 
  private:
   int target_memory_to_free_kb_;
   std::map<base::ProcessHandle, int> process_pss_;
 };
 
 TEST_F(TabManagerDelegateTest, SetOomScoreAdj) {
+  base::MessageLoop message_loop;
   arc::FakeArcBridgeService fake_arc_bridge_service;
   MockTabManagerDelegate tab_manager_delegate;
 
   std::vector<arc::ArcProcess> arc_processes;
   arc_processes.emplace_back(1, 10, "focused", arc::mojom::ProcessState::TOP,
                              kIsFocused, 100);
   arc_processes.emplace_back(2, 20, "visible1", arc::mojom::ProcessState::TOP,
                              kNotFocused, 200);
   arc_processes.emplace_back(
       3, 30, "service", arc::mojom::ProcessState::SERVICE, kNotFocused, 500);
@@ skipping 117 matching lines @@
   // Killed tabs and their content id.
   // Note that process with pid 11 is counted twice. But so far I don't have a
   // good way to estimate the memory freed if multiple tabs share one process.
   EXPECT_EQ(3U, killed_tabs.size());
   EXPECT_EQ(2, killed_tabs[0]);
   EXPECT_EQ(5, killed_tabs[1]);
   EXPECT_EQ(1, killed_tabs[2]);
 }
 
 }  // namespace memory