Add android_library template

base/BUILD.gn

Index: base/BUILD.gn
diff --git a/base/BUILD.gn b/base/BUILD.gn
index 3fecbe2727c401d1595d89a9572e1895d15c8ec8..1c41ddc1caa9f012e85ca5ee0e263aca02758fa4 100644
--- a/base/BUILD.gn
+++ b/base/BUILD.gn
@@ -935,6 +935,60 @@ if (is_android) {
     jni_package = "base"
   }
 
+  android_library("base_java") {
+    java_files = [
+      "android/java/src/org/chromium/base/BaseChromiumApplication.java",
+      "android/java/src/org/chromium/base/JavaHandlerThread.java",
+      "android/java/src/org/chromium/base/PathService.java",
+      "android/java/src/org/chromium/base/CollectionUtil.java",
+      "android/java/src/org/chromium/base/PathUtils.java",
+      "android/java/src/org/chromium/base/library_loader/ProcessInitException.java",
+      "android/java/src/org/chromium/base/library_loader/LoaderErrors.java",
+      "android/java/src/org/chromium/base/library_loader/LibraryLoader.java",
+      "android/java/src/org/chromium/base/library_loader/Linker.java",
+      "android/java/src/org/chromium/base/library_loader/LibraryLoaderHelper.java",
+      "android/java/src/org/chromium/base/ThreadUtils.java",
+      "android/java/src/org/chromium/base/CpuFeatures.java",
+      "android/java/src/org/chromium/base/CalledByNative.java",
+      "android/java/src/org/chromium/base/PowerMonitor.java",
+      "android/java/src/org/chromium/base/CommandLine.java",
+      "android/java/src/org/chromium/base/SystemMessageHandler.java",
+      "android/java/src/org/chromium/base/ContentUriUtils.java",
+      "android/java/src/org/chromium/base/WindowCallbackWrapper.java",
+      "android/java/src/org/chromium/base/ImportantFileWriterAndroid.java",
+      "android/java/src/org/chromium/base/BaseSwitches.java",
+      "android/java/src/org/chromium/base/SysUtils.java",
+      "android/java/src/org/chromium/base/PowerStatusReceiver.java",
+      "android/java/src/org/chromium/base/ObserverList.java",
+      "android/java/src/org/chromium/base/PerfTraceEvent.java",
+      "android/java/src/org/chromium/base/BuildInfo.java",
+      "android/java/src/org/chromium/base/TraceEvent.java",
+      "android/java/src/org/chromium/base/AccessedByNative.java",
+      "android/java/src/org/chromium/base/JNINamespace.java",
+      "android/java/src/org/chromium/base/CalledByNativeUnchecked.java",
+      "android/java/src/org/chromium/base/MemoryPressureListener.java",
+      "android/java/src/org/chromium/base/NativeClassQualifiedName.java",
+      "android/java/src/org/chromium/base/ActivityState.java",
+      "android/java/src/org/chromium/base/ApplicationStatus.java",
+      "android/java/src/org/chromium/base/ApiCompatibilityUtils.java",
+    ]
+
+    #TODO(cjhopman): support non-packaged files.
+    #non_packaged_java_files = [
+    #  "base/android/java/src/org/chromium/base/library_loader/LibraryLoader.java",
+    #]
+
+    srcjar_deps = [
+      ":base_java_application_state",
+      ":base_java_memory_pressure_level_list",
+      ":base_native_libraries_gen",
+    ]
+
+    android_library_deps = [
+      "//third_party/jsr-305:jsr_305_javalib"
+    ]
+  }
+
   java_cpp_template("base_java_application_state") {
     sources = [
       "android/java/src/org/chromium/base/ApplicationState.template",
@@ -968,6 +1022,4 @@ if (is_android) {
     package_name = "org/chromium/base/library_loader"
     include_path = "android/java/templates"
   }
-
-
 }