Revert of Architecture for cross-process memory notification suppressing

content/browser/memory/memory_pressure_controller_browsertest.cc

-// Copyright 2015 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 "base/bind.h"
-#include "base/memory/memory_pressure_listener.h"
-#include "content/browser/memory/memory_message_filter.h"
-#include "content/browser/memory/memory_pressure_controller.h"
-#include "content/common/memory_messages.h"
-#include "content/public/test/content_browser_test.h"
-#include "content/public/test/content_browser_test_utils.h"
-#include "content/public/test/test_utils.h"
-#include "ipc/ipc_message.h"
-#include "testing/gmock/include/gmock/gmock.h"
-
-namespace content {
-
-MATCHER_P(IsSetSuppressedMessage, suppressed, "") {
-  // Ensure that the message is deleted upon return.
-  scoped_ptr<IPC::Message> message(arg);
-  if (message == nullptr)
-    return false;
-  MemoryMsg_SetPressureNotificationsSuppressed::Param param;
-  if (!MemoryMsg_SetPressureNotificationsSuppressed::Read(message.get(),
-                                                          &param))
-    return false;
-  return suppressed == base::get<0>(param);
-}
-
-class MemoryMessageFilterForTesting : public MemoryMessageFilter {
- public:
-  MOCK_METHOD1(Send, bool(IPC::Message* message));
-
-  void Add() {
-    // The filter must be added on the IO thread.
-    if (!BrowserThread::CurrentlyOn(BrowserThread::IO)) {
-      BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
-                              base::Bind(&MemoryMessageFilterForTesting::Add,
-                                         base::Unretained(this)));
-      RunAllPendingInMessageLoop(BrowserThread::IO);
-      return;
-    }
-    OnChannelConnected(0);
-    OnFilterAdded(nullptr);
-  }
-
-  void Remove() {
-    // The filter must be removed on the IO thread.
-    if (!BrowserThread::CurrentlyOn(BrowserThread::IO)) {
-      BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
-                              base::Bind(&MemoryMessageFilterForTesting::Remove,
-                                         base::Unretained(this)));
-      RunAllPendingInMessageLoop(BrowserThread::IO);
-      return;
-    }
-    OnChannelClosing();
-    OnFilterRemoved();
-  }
-
- protected:
-  ~MemoryMessageFilterForTesting() override {}
-};
-
-class MemoryPressureControllerBrowserTest : public ContentBrowserTest {
- protected:
-  void SetPressureNotificationsSuppressedInAllProcessesAndWait(
-      bool suppressed) {
-    MemoryPressureController::GetInstance()
-        ->SetPressureNotificationsSuppressedInAllProcesses(suppressed);
-    RunAllPendingInMessageLoop(BrowserThread::IO);
-  }
-};
-
-IN_PROC_BROWSER_TEST_F(MemoryPressureControllerBrowserTest,
-                       SetPressureNotificationsSuppressedInAllProcesses) {
-  scoped_refptr<MemoryMessageFilterForTesting> filter1(
-      new MemoryMessageFilterForTesting);
-  scoped_refptr<MemoryMessageFilterForTesting> filter2(
-      new MemoryMessageFilterForTesting);
-
-  NavigateToURL(shell(), GetTestUrl("", "title.html"));
-
-  // Add the first filter. No messages should be sent because notifications are
-  // not suppressed.
-  EXPECT_CALL(*filter1, Send(testing::_)).Times(0);
-  EXPECT_CALL(*filter2, Send(testing::_)).Times(0);
-  filter1->Add();
-  EXPECT_FALSE(base::MemoryPressureListener::AreNotificationsSuppressed());
-
-  // Enable suppressing memory pressure notifications in all processes. The
-  // first filter should send a message.
-  EXPECT_CALL(*filter1, Send(IsSetSuppressedMessage(true))).Times(1);
-  EXPECT_CALL(*filter2, Send(testing::_)).Times(0);
-  SetPressureNotificationsSuppressedInAllProcessesAndWait(true);
-  EXPECT_TRUE(base::MemoryPressureListener::AreNotificationsSuppressed());
-
-  // Add the second filter. It should send a message because notifications are
-  // suppressed.
-  EXPECT_CALL(*filter1, Send(testing::_)).Times(0);
-  EXPECT_CALL(*filter2, Send(IsSetSuppressedMessage(true))).Times(1);
-  filter2->Add();
-
-  // Disable suppressing memory pressure notifications in all processes. Both
-  // filters should send a message.
-  EXPECT_CALL(*filter1, Send(IsSetSuppressedMessage(false))).Times(1);
-  EXPECT_CALL(*filter2, Send(IsSetSuppressedMessage(false))).Times(1);
-  SetPressureNotificationsSuppressedInAllProcessesAndWait(false);
-  EXPECT_FALSE(base::MemoryPressureListener::AreNotificationsSuppressed());
-
-  // Remove the first filter. No messages should be sent.
-  EXPECT_CALL(*filter1, Send(testing::_)).Times(0);
-  EXPECT_CALL(*filter2, Send(testing::_)).Times(0);
-  filter1->Remove();
-
-  // Enable suppressing memory pressure notifications in all processes. The
-  // second filter should send a message.
-  EXPECT_CALL(*filter1, Send(testing::_)).Times(0);
-  EXPECT_CALL(*filter2, Send(IsSetSuppressedMessage(true))).Times(1);
-  SetPressureNotificationsSuppressedInAllProcessesAndWait(true);
-  EXPECT_TRUE(base::MemoryPressureListener::AreNotificationsSuppressed());
-
-  // Remove the second filter and disable suppressing memory pressure
-  // notifications in all processes. No messages should be sent.
-  EXPECT_CALL(*filter1, Send(testing::_)).Times(0);
-  EXPECT_CALL(*filter2, Send(testing::_)).Times(0);
-  filter2->Remove();
-  SetPressureNotificationsSuppressedInAllProcessesAndWait(false);
-  EXPECT_FALSE(base::MemoryPressureListener::AreNotificationsSuppressed());
-}
-
-}  // namespace content