Add android_library template

base/BUILD.gn

Index: base/BUILD.gn
diff --git a/base/BUILD.gn b/base/BUILD.gn
index 700ea3304b0f8b9e5795295dbcaab64aff6af34c..7257753a9d85658401d4f77b4e30f95a0fe2444c 100644
--- a/base/BUILD.gn
+++ b/base/BUILD.gn
@@ -1330,6 +1330,62 @@ if (is_android) {
     jni_package = "base"
   }
 
+  android_library("base_java") {
+    srcjar_deps = [
+      ":base_java_application_state",
+      ":base_java_memory_pressure_level_list",
+      ":base_native_libraries_gen",
+    ]
+
+    deps = [
+      "//third_party/jsr-305:jsr_305_javalib"
+    ]
+
+    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",
+    ]
+
+    # A new version of NativeLibraries.java (with the actual correct values)
+    # will be created when creating an apk.
+    jar_excluded_patterns = [
+      "*/NativeLibraries.class",
+      "*/NativeLibraries##*.class",
+    ]
+  }
+
   java_cpp_template("base_java_application_state") {
     sources = [
       "android/java/src/org/chromium/base/ApplicationState.template",
@@ -1363,6 +1419,4 @@ if (is_android) {
     package_name = "org/chromium/base/library_loader"
     include_path = "android/java/templates"
   }
-
-
 }