Port most of the remainder of //tools/android from GYP to GN

tools/android/heap_profiler/BUILD.gn

+# 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.
+
+import("//testing/test.gni")
+
+shared_library("heap_profiler") {
+  sources = [
+    "heap_profiler_hooks_android.c",
+  ]
+  public_deps = [
+    ":heap_profiler_core",
+  ]
+}
+
+source_set("heap_profiler_core") {
+  sources = [
+    "heap_profiler.c",
+    "heap_profiler.h",
+  ]
+
+  configs -= [ "//build/config/compiler:chromium_code" ]
+  configs += [ "//build/config/compiler:no_chromium_code" ]
+}
+
+executable("heap_dump") {
+  sources = [
+    "heap_dump.c",
+  ]
+
+  deps = [
+    ":heap_profiler_core",
+  ]
+
+  configs -= [ "//build/config/compiler:chromium_code" ]
+  configs += [ "//build/config/compiler:no_chromium_code" ]
+}
+
+test("heap_profiler_unittests") {
+  sources = [
+    "heap_profiler_unittest.cc",
+  ]
+  deps = [
+    ":heap_profiler_core",
+    "//testing/gtest",
+    "//testing/gtest:gtest_main",
+  ]
+}
+
+executable("heap_profiler_integrationtest") {
+  testonly = true
+
+  sources = [
+    "heap_profiler_integrationtest.cc",
+  ]
+  deps = [
+    "//testing/gtest",
+    ":heap_profiler",
+  ]
+
+  configs -= [ "//build/config/compiler:chromium_code" ]
+  configs += [ "//build/config/compiler:no_chromium_code" ]
+}