AOSP/Gallery2 - Updated to sdkVersion 29.

BUG: 133177396

Test: manual - Ran the following commands and tested the gallery2 UI on Pixel phone.

$ make -j 40
$ make Gallery2 -j

$ ls -l out/target/product/marlin/system/product/app/Gallery2/Gallery2.apk
  -rw-r--r-- 1 rtenneti primarygroup 5208417 Oct 14 14:42 out/target/product/marlin/system/product/app/Gallery2/Gallery2.apk

$ adb install -r -d -g out/target/product/marlin/system/product/app/Gallery2/Gallery2.apk

Change-Id: I90f703ff84831dfd382e152273e770adf4f60c83
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 18b83ca..bcf2c78 100755
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -24,7 +24,7 @@
 
     <original-package android:name="com.android.gallery3d" />
 
-    <uses-sdk android:minSdkVersion="23" android:targetSdkVersion="28"/>
+    <uses-sdk android:minSdkVersion="23" android:targetSdkVersion="29"/>
 
     <permission android:name="com.android.gallery3d.permission.GALLERY_PROVIDER"
                 android:protectionLevel="signatureOrSystem" />