Remove references to DrMemory from chromium repo.

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.
 
 # This is the root build file for GN. GN will start processing by loading this
 # file, and recursively load all dependencies until all dependencies are either
 # resolved or known not to exist (which will cause the build to fail). So if
 # you add a new build file, there must be some path of dependencies from this
 # file to your new one or GN won't know about it.
 
@@ skipping 1064 matching lines @@
   assert(target_name != "")  # Mark as used.
   sources = invoker.actual_sources
   assert(
       sources == invoker.actual_sources,
       "Do not use a platform name in your output directory (found \"$root_build_dir\"). http://crbug.com/548283")
 }
 
 assert_valid_out_dir("_unused") {
   actual_sources = [ "$root_build_dir/foo" ]
 }
-
-if (is_win) {
-  group("chromium_builder_lkgr_drmemory_win") {
-    testonly = true
-
-    deps = [
-      "//content/shell:content_shell",
-      "//content/shell:content_shell_crash_service",
-    ]
-  }
-
-  group("chromium_builder_dbg_drmemory_win") {
-    testonly = true
-
-    deps = [
-      "//base:base_unittests",
-      "//cc:cc_unittests",
-      "//cc/blink:cc_blink_unittests",
-      "//chrome/installer/setup:setup_unittests",
-      "//chrome/installer/util:installer_util_unittests",
-      "//chrome/test:browser_tests",
-      "//chrome/test:chrome_app_unittests",
-      "//chrome/test:unit_tests",
-      "//chrome/test/chromedriver:chromedriver_unittests",
-      "//chrome_elf:chrome_elf_unittests",
-      "//components:components_unittests",
-      "//content/shell:content_shell_crash_service",
-      "//content/test:content_browsertests",
-      "//content/test:content_unittests",
-      "//courgette:courgette_unittests",
-      "//crypto:crypto_unittests",
-      "//device:device_unittests",
-      "//extensions:extensions_browsertests",
-      "//extensions:extensions_unittests",
-      "//gin:gin_shell",
-      "//gin:gin_unittests",
-      "//google_apis:google_apis_unittests",
-      "//google_apis/gcm:gcm_unit_tests",
-      "//gpu:gpu_unittests",
-      "//ipc:ipc_tests",
-      "//jingle:jingle_unittests",
-      "//media:media_unittests",
-      "//media/capture:capture_unittests",
-      "//media/cast:cast_unittests",
-      "//media/midi:midi_unittests",
-      "//mojo",
-      "//net:net_unittests",
-      "//printing:printing_unittests",
-      "//remoting:remoting_unittests",
-      "//skia:skia_unittests",
-      "//sql:sql_unittests",
-      "//storage//browser:storage_unittests",
-      "//third_party/WebKit/Source/platform:blink_platform_unittests",
-      "//third_party/WebKit/Source/platform/heap:blink_heap_unittests",
-      "//third_party/angle/src/tests:angle_unittests",
-      "//third_party/cacheinvalidation:cacheinvalidation_unittests",
-      "//third_party/leveldatabase:env_chromium_unittests",
-      "//third_party/libaddressinput:libaddressinput_unittests",
-      "//third_party/libphonenumber:libphonenumber_unittests",
-      "//ui/accessibility:accessibility_unittests",
-      "//ui/aura:aura_unittests",
-      "//ui/compositor:compositor_unittests",
-      "//ui/display:display_unittests",
-      "//ui/events:events_unittests",
-      "//ui/gfx:gfx_unittests",
-      "//ui/gl:gl_unittests",
-      "//ui/keyboard:keyboard_unittests",
-      "//ui/touch_selection:ui_touch_selection_unittests",
-      "//url:url_unittests",
-    ]
-  }
-}