Associate a UserHandle with each PhoneAccountHandle

This needs to be tracked so that connections get directed to the
correct user. This is not a public API; rather, it will be populated
and read only by the Telecom service.

Expose a new capability, CAPABILITY_MULTI_USER which can be used by
system-privileged apps to indicate that this PhoneAccount may be
used by any user on the device.

Bug: 17421902
Bug: 17421044
Change-Id: I673904a7ae038c88688bba62642e93174e55c308

telecomm/java/android/telecom/PhoneAccount.java

@@ -104,6 +104,15 @@ public class PhoneAccount implements Parcelable {
      */
     public static final int CAPABILITY_PLACE_EMERGENCY_CALLS = 0x10;
 
+    /**
+     * Flag indicating that this {@code PhoneAccount} is capable of being used by all users. This
+     * should only be used by system apps (and will be ignored for all other apps trying to use it).
+     * <p>
+     * See {@link #getCapabilities}
+     * @hide
+     */
+    public static final int CAPABILITY_MULTI_USER = 0x20;
+
     /**
      * URI scheme for telephone number URIs.
      */
@@ -193,6 +202,12 @@ public class PhoneAccount implements Parcelable {
             mSupportedUriSchemes.addAll(phoneAccount.getSupportedUriSchemes());
         }
 
+        /** @hide */
+        public Builder setAccountHandle(PhoneAccountHandle accountHandle) {
+            mAccountHandle = accountHandle;
+            return this;
+        }
+
         /**
          * Sets the address. See {@link PhoneAccount#getAddress}.
          *