Unhide isUiContext()

... because it is more tied to Context instance that developers
are working with.

Bug: 179308116
Test: atest ContextIsUiContextTest
Change-Id: I41d90c4b5b81b430fc8007a0bdf86c6fd1c54400

core/api/current.txt

@@ -10356,7 +10356,7 @@ package android.content {
     method public abstract void grantUriPermission(String, android.net.Uri, int);
     method public abstract boolean isDeviceProtectedStorage();
     method public boolean isRestricted();
-    method public static boolean isUiContext(@NonNull android.content.Context);
+    method public boolean isUiContext();
     method public abstract boolean moveDatabaseFrom(android.content.Context, String);
     method public abstract boolean moveSharedPreferencesFrom(android.content.Context, String);
     method @NonNull public final android.content.res.TypedArray obtainStyledAttributes(@NonNull @StyleableRes int[]);
@@ -18813,6 +18813,7 @@ package android.inputmethodservice {
   public abstract class AbstractInputMethodService extends android.app.Service implements android.view.KeyEvent.Callback {
     ctor public AbstractInputMethodService();
     method public android.view.KeyEvent.DispatcherState getKeyDispatcherState();
+    method public final boolean isUiContext();
     method public final android.os.IBinder onBind(android.content.Intent);
     method public abstract android.inputmethodservice.AbstractInputMethodService.AbstractInputMethodImpl onCreateInputMethodInterface();
     method public abstract android.inputmethodservice.AbstractInputMethodService.AbstractInputMethodSessionImpl onCreateInputMethodSessionInterface();

core/java/android/content/Context.java

@@ -6662,15 +6662,6 @@ public abstract class Context {
         }
     }
 
-    /**
-     * Indicates if this context is a visual context such as {@link android.app.Activity} or
-     * a context created from {@link #createWindowContext(int, Bundle)}.
-     * @hide
-     */
-    public boolean isUiContext() {
-        throw new RuntimeException("Not implemented. Must override in a subclass.");
-    }
-
     /**
      * Returns {@code true} if the context is a UI context which can access UI components such as
      * {@link WindowManager}, {@link android.view.LayoutInflater LayoutInflater} or
@@ -6683,12 +6674,16 @@ public abstract class Context {
      * {@link #createWindowContext(int, Bundle)} or
      * {@link android.inputmethodservice.InputMethodService InputMethodService}
      * </p>
+     * <p>
+     * Note that even if it is allowed programmatically, it is not suggested to override this
+     * method to bypass {@link android.os.strictmode.IncorrectContextUseViolation} verification.
+     * </p>
      *
      * @see #getDisplay()
      * @see #getSystemService(String)
      * @see android.os.StrictMode.VmPolicy.Builder#detectIncorrectContextUse()
      */
-    public static boolean isUiContext(@NonNull Context context) {
-        return context.isUiContext();
+    public boolean isUiContext() {
+        throw new RuntimeException("Not implemented. Must override in a subclass.");
     }
 }

core/java/android/os/strictmode/IncorrectContextUseViolation.java

@@ -24,7 +24,7 @@ import android.content.Context;
  * instance.
  *
  * @see Context#getSystemService(String)
- * @see Context#isUiContext(Context)
+ * @see Context#isUiContext
  * @see android.os.StrictMode.VmPolicy.Builder#detectIncorrectContextUse()
  */
 public final class IncorrectContextUseViolation extends Violation {