Greatly improve (non-android) java support

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 159 matching lines @@
   }
 
   if (cpu_arch == "x86" || cpu_arch == "x64") {
     # YASM is x86/x64 only.
     deps += [ "//third_party/yasm($host_toolchain)" ]
   }
 
   if (is_android) {
     deps += [
       "//base/android/linker:chromium_android_linker",
+      "//build/android/gyp/test:hello_world",
       "//build/android/rezip",
       "//third_party/openmax_dl/dl",
       "//content/shell/android:content_shell_apk",
       "//chrome/android:chrome_shell_apk",
       "//chrome/test/chromedriver/test/webview_shell:chromedriver_webview_shell_apk",
       "//ui/android:ui_java",
       "//third_party/android_tools:android_gcm_java",
       "//third_party/android_tools:uiautomator_java",
       "//third_party/android_tools:android_support_v13_java",
       "//third_party/android_tools:android_support_v7_appcompat_java",
@@ skipping 58 matching lines @@
     ]
   }
 
   # Non-mobile builds.
   if (!is_android && !is_ios) {
     deps += [
       "//device/usb",
     ]
   }
 }