Remove memory_pressure component.

components/memory_pressure/BUILD.gn

Index: components/memory_pressure/BUILD.gn
diff --git a/components/memory_pressure/BUILD.gn b/components/memory_pressure/BUILD.gn
deleted file mode 100644
index 0f6af8519e28f0ec50e166f9ba77261dd3dadee1..0000000000000000000000000000000000000000
--- a/components/memory_pressure/BUILD.gn
+++ /dev/null
@@ -1,46 +0,0 @@
-# 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.
-
-static_library("memory_pressure") {
-  sources = [
-    "direct_memory_pressure_calculator.h",
-    "direct_memory_pressure_calculator_linux.cc",
-    "direct_memory_pressure_calculator_linux.h",
-    "direct_memory_pressure_calculator_win.cc",
-    "direct_memory_pressure_calculator_win.h",
-    "filtered_memory_pressure_calculator.cc",
-    "filtered_memory_pressure_calculator.h",
-    "memory_pressure_calculator.h",
-    "memory_pressure_listener.cc",
-    "memory_pressure_listener.h",
-    "memory_pressure_monitor.cc",
-    "memory_pressure_monitor.h",
-    "memory_pressure_stats_collector.cc",
-    "memory_pressure_stats_collector.h",
-  ]
-
-  deps = [
-    "//base",
-  ]
-}
-
-source_set("unit_tests") {
-  testonly = true
-  sources = [
-    "direct_memory_pressure_calculator_linux_unittest.cc",
-    "direct_memory_pressure_calculator_win_unittest.cc",
-    "filtered_memory_pressure_calculator_unittest.cc",
-    "memory_pressure_monitor_unittest.cc",
-    "memory_pressure_stats_collector_unittest.cc",
-    "test_memory_pressure_calculator.cc",
-    "test_memory_pressure_calculator.h",
-  ]
-
-  deps = [
-    ":memory_pressure",
-    "//base/test:test_support",
-    "//testing/gmock",
-    "//testing/gtest",
-  ]
-}