base: Remove non-caching discardable memory implementation.

base/BUILD.gn

 # Copyright (c) 2013 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.
 
 import("//build/config/ui.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
 
@@ skipping 307 matching lines @@
     "md5.h",
     "memory/aligned_memory.cc",
     "memory/aligned_memory.h",
     "memory/discardable_memory.cc",
     "memory/discardable_memory.h",
     "memory/discardable_memory_android.cc",
     "memory/discardable_memory_emulated.cc",
     "memory/discardable_memory_emulated.h",
     "memory/discardable_memory_linux.cc",
     "memory/discardable_memory_mac.cc",
-    "memory/discardable_memory_malloc.cc",
-    "memory/discardable_memory_malloc.h",
     "memory/discardable_memory_manager.cc",
     "memory/discardable_memory_manager.h",
     "memory/discardable_memory_win.cc",
     "memory/linked_ptr.h",
     "memory/manual_constructor.h",
     "memory/memory_pressure_listener.cc",
     "memory/memory_pressure_listener.h",
     "memory/raw_scoped_refptr_mismatch_checker.h",
     "memory/ref_counted.cc",
     "memory/ref_counted.h",
@@ skipping 1149 matching lines @@
   # GYP: //base.gyp:base_unittests_apk
   unittest_apk("base_unittests_apk") {
     deps = [
       ":base_java",
       ":base_java_unittest_support",
       ":base_unittests",
     ]
     unittests_dep = ":base_unittests"
   }
 }