Remove the Kasko based out of process browser hang instrumentation.

chrome/chrome_watcher/BUILD.gn

Index: chrome/chrome_watcher/BUILD.gn
diff --git a/chrome/chrome_watcher/BUILD.gn b/chrome/chrome_watcher/BUILD.gn
index 428616443ddfc9b511a19923fc3487f3b513361c..8a3e48a931d97228f6f061bc1a5b90a3c9a7dd3e 100644
--- a/chrome/chrome_watcher/BUILD.gn
+++ b/chrome/chrome_watcher/BUILD.gn
@@ -4,7 +4,6 @@
 
 import("//chrome/version.gni")
 import("//testing/test.gni")
-import("//third_party/kasko/kasko.gni")
 
 source_set("client") {
   sources = [
@@ -16,42 +15,36 @@ source_set("client") {
   ]
 }
 
-if (enable_kasko) {
-  source_set("kasko_util") {
-    sources = [
-      "kasko_util.cc",
-      "kasko_util.h",
-      "system_load_estimator.cc",
-      "system_load_estimator.h",
-    ]
-    deps = [
-      "//base",
-      "//components/crash/content/app",
-      "//components/memory_pressure",
-      "//third_party/kasko",
-    ]
-    libs = [ "pdh.lib" ]  # Used by system_load_estimator.h.
-    ldflags = [ "/DELAYLOAD:pdh.dll" ]  # Only used on report capture.
-  }
+source_set("hang_util") {
+  sources = [
+    "system_load_estimator.cc",
+    "system_load_estimator.h",
+  ]
+  deps = [
+    "//base",
+    "//components/memory_pressure",
+  ]
+  libs = [ "pdh.lib" ]  # Used by system_load_estimator.h.
+  ldflags = [ "/DELAYLOAD:pdh.dll" ]  # Only used on report capture.
+}
+
+test("system_load_estimator_unittests") {
+  sources = [
+    "system_load_estimator_unittest.cc",
+  ]
+  deps = [
+    ":client",
+    ":hang_util",
+    "//base/test:run_all_unittests",
+    "//base/test:test_support",
+    "//testing/gtest",
+  ]
+}
 
-  test("system_load_estimator_unittests") {
-    sources = [
-      "system_load_estimator_unittest.cc",
-    ]
-    deps = [
-      ":client",
-      ":kasko_util",
-      "//base/test:run_all_unittests",
-      "//base/test:test_support",
-      "//testing/gtest",
-    ]
-  }
-} else {
-  group("kasko_util") {
-    public_deps = [
-      "//third_party/kasko:kasko_features",
-    ]
-  }
+group("kasko_util") {
+  public_deps = [
+    "//third_party/kasko:kasko_features",
+  ]
 }
 
 process_version("chrome_watcher_resources") {