MR1 - Adding more Telecom state dumping.

- Add toString for PhoneAccount class for use when dumping state.
- Call Log.pii for PhoneAccountHandle mId since it may contain pii (eg sip
uri).

Bug: 17730966
Change-Id: Iddbd949b42704405de558f8ed8c4449242b74870

telecomm/java/android/telecom/PhoneAccount.java

@@ -451,4 +451,19 @@ public class PhoneAccount implements Parcelable {
         in.readList(supportedUriSchemes, classLoader);
         mSupportedUriSchemes = Collections.unmodifiableList(supportedUriSchemes);
     }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder().append("[PhoneAccount: ")
+                .append(mAccountHandle)
+                .append(" Capabilities: ")
+                .append(mCapabilities)
+                .append(" Schemes: ");
+        for (String scheme : mSupportedUriSchemes) {
+            sb.append(scheme)
+                    .append(" ");
+        }
+        sb.append("]");
+        return sb.toString();
+    }
 }