Declare official platform slice

Create the notion of an official platform slice.
This includes:
- Adding a second authority to the provider
- tagging slices in xml with a platform slice flag
- Including authority in the getUri method

Bug:73359139
Test: robotests
Change-Id: I5382be138a262dbc5a8324c34aab131c5d0d5516
Merged-In: I581ee6dfcdf935f452a15e89e5d055e375ff1877

src/com/android/settings/slices/SliceData.java

@@ -70,6 +70,8 @@ public class SliceData {
     @SliceType
     private final int mSliceType;
 
+    private final boolean mIsPlatformDefined;
+
     public String getKey() {
         return mKey;
     }
@@ -106,6 +108,10 @@ public class SliceData {
         return mSliceType;
     }
 
+    public boolean isPlatformDefined() {
+        return mIsPlatformDefined;
+    }
+
     private SliceData(Builder builder) {
         mKey = builder.mKey;
         mTitle = builder.mTitle;
@@ -116,6 +122,7 @@ public class SliceData {
         mUri = builder.mUri;
         mPreferenceController = builder.mPrefControllerClassName;
         mSliceType = builder.mSliceType;
+        mIsPlatformDefined = builder.mIsPlatformDefined;
     }
 
     @Override
@@ -151,6 +158,8 @@ public class SliceData {
 
         private int mSliceType;
 
+        private boolean mIsPlatformDefined;
+
         public Builder setKey(String key) {
             mKey = key;
             return this;
@@ -196,6 +205,11 @@ public class SliceData {
             return this;
         }
 
+        public Builder setPlatformDefined(boolean isPlatformDefined) {
+            mIsPlatformDefined = isPlatformDefined;
+            return this;
+        }
+
         public SliceData build() {
             if (TextUtils.isEmpty(mKey)) {
                 throw new IllegalStateException("Key cannot be empty");