Update Android Apps to use gradle

platform_tools/android/gyp/skia_android.gypi

Index: platform_tools/android/gyp/skia_android.gypi
diff --git a/platform_tools/android/gyp/skia_android.gypi b/platform_tools/android/gyp/skia_android.gypi
index e8bf1c3150d221c4e9a2ffa569edb4a81c5e3310..c7218a78a044c4256105e8b24897abf52487e222 100644
--- a/platform_tools/android/gyp/skia_android.gypi
+++ b/platform_tools/android/gyp/skia_android.gypi
@@ -48,7 +48,7 @@
         # libraries to copy, this will cause an error in Make, but the app will
         # still build.
         {
-          'destination': '<(PRODUCT_DIR)/android/SampleApp/libs/<(android_arch)',
+          'destination': '<(android_base)/apps/sample_app/src/main/libs/<(android_arch)',
           'conditions': [
             [ 'skia_shared_lib', {
               'files': [
@@ -69,40 +69,25 @@
       'dependencies': [
         'CopySampleAppDeps',
       ],
-      'variables': {
-         'ANDROID_SDK_ROOT': '<!(echo $ANDROID_SDK_ROOT)',
-         # the ninja generator treats PRODUCT_DIR as a relative path to the
-         # gyp directory but android ant build wants a path relative to the
-         # build.xml file so we do that adjustment here.
-         'ANDROID_OUT': '../../<(PRODUCT_DIR)/android/SampleApp'
-       },
       'actions': [
         {
           'action_name': 'SampleApp_apk',
           'inputs': [
-            '<(android_base)/app/AndroidManifest.xml',
-            '<(android_base)/app/build.xml',
-            '<(android_base)/app/project.properties',
-            '<(android_base)/app/jni/com_skia_SkiaSampleRenderer.h',
-            '<(android_base)/app/jni/com_skia_SkiaSampleRenderer.cpp',
-            '<(android_base)/app/src/com/skia/SkiaSampleActivity.java',
-            '<(android_base)/app/src/com/skia/SkiaSampleRenderer.java',
-            '<(android_base)/app/src/com/skia/SkiaSampleView.java',
+            '<(android_base)/apps/sample_app/src/main/AndroidManifest.xml',
+            '<(android_base)/apps/sample_app/src/main/jni/com_skia_SkiaSampleRenderer.h',
+            '<(android_base)/apps/sample_app/src/main/jni/com_skia_SkiaSampleRenderer.cpp',
+            '<(android_base)/apps/sample_app/src/main/java/com/skia/SkiaSampleActivity.java',
+            '<(android_base)/apps/sample_app/src/main/java/com/skia/SkiaSampleRenderer.java',
+            '<(android_base)/apps/sample_app/src/main/java/com/skia/SkiaSampleView.java',
           ],
           'outputs': [
-            '<(PRODUCT_DIR)/../android/SampleApp/bin/SampleApp.apk',
+            '<(android_base)/apps/sample_app/build',
           ],
           'action': [
-            'ant',
-            '-quiet',
-            '-f',
-            '<(android_base)/app/build.xml',
-            '-Dout.dir=<(ANDROID_OUT)/bin',
-            '-Dgen.absolute.dir=<(ANDROID_OUT)/gen',
-            '-Dnative.libs.absolute.dir=<(ANDROID_OUT)/libs',
-            '-Dout.final.file=<(ANDROID_OUT)/bin/SampleApp.apk',
-            '-Dsdk.dir=<(ANDROID_SDK_ROOT)',
-            'debug',
+            '<(android_base)/apps/gradlew',
+            ':sample_app:assembleDebug',
+            '-p<(android_base)/apps/sample_app',
+            '-PsuppressNativeBuild',
           ],
         },
       ],
@@ -122,7 +107,7 @@
         # libraries to copy, this will cause an error in Make, but the app will
         # still build.
         {
-          'destination': '<(PRODUCT_DIR)/android/VisualBench/libs/<(android_arch)',
+          'destination': '<(android_base)/apps/visualbench/src/main/libs/<(android_arch)',
           'conditions': [
             [ 'skia_shared_lib', {
               'files': [
@@ -143,36 +128,21 @@
       'dependencies': [
         'CopyVisualBenchDeps',
       ],
-      'variables': {
-         'ANDROID_SDK_ROOT': '<!(echo $ANDROID_SDK_ROOT)',
-         # the ninja generator treats PRODUCT_DIR as a relative path to the
-         # gyp directory but android ant build wants a path relative to the
-         # build.xml file so we do that adjustment here.
-         'ANDROID_OUT': '../../<(PRODUCT_DIR)/android/VisualBench/'
-       },
       'actions': [
         {
           'action_name': 'SkiaVisualBench_apk',
           'inputs': [
-            '<(android_base)/visualbench/AndroidManifest.xml',
-            '<(android_base)/visualbench/build.xml',
-            '<(android_base)/visualbench/project.properties',
-            '<(android_base)/visualbench/src/com/skia/VisualBenchActivity.java',
+            '<(android_base)/apps/visualbench/src/main/AndroidManifest.xml',
+            '<(android_base)/apps/visualbench/src/main/java/com/skia/VisualBenchActivity.java',
           ],
           'outputs': [
-            '<(PRODUCT_DIR)/../android/VisualBench/bin/VisualBench.apk',
+            '<(android_base)/apps/visualbench/build',
           ],
           'action': [
-            'ant',
-            '-quiet',
-            '-f',
-            '<(android_base)/visualbench/build.xml',
-            '-Dout.dir=<(ANDROID_OUT)/bin',
-            '-Dgen.absolute.dir=<(ANDROID_OUT)/gen',
-            '-Dnative.libs.absolute.dir=<(ANDROID_OUT)/libs',
-            '-Dout.final.file=<(ANDROID_OUT)/bin/VisualBench.apk',
-            '-Dsdk.dir=<(ANDROID_SDK_ROOT)',
-            'debug',
+            '<(android_base)/apps/gradlew',
+            ':visualbench:assembleDebug',
+            '-p<(android_base)/apps/visualbench',
+            '-PsuppressNativeBuild',
           ],
         },
       ],