API review cleanups/changes.

- Change onCreateIncomingConnectionFailed/onCreateOutgoingConnectionFailed
to accept the connection mgr phone account as the first parameter.
- For the video APIs, pass the target SDK of the caller into along so
that the Telecom permission check can have fallback behavior for older API
versions.
- Add guidance for how UX should be shown in onShowIncomingCallUi API.
API guidance follows how the Dialer app shows its notification and full
screen UX.

Test: Manual, CTS.
Bug: 35767711
Bug: 35767096
Change-Id: Ib343f0eda1a4d067a38c553f33f140b4efcf3e48

telecomm/java/android/telecom/Phone.java

@@ -127,14 +127,20 @@ public final class Phone {
 
     private final String mCallingPackage;
 
-    Phone(InCallAdapter adapter, String callingPackage) {
+    /**
+     * The Target SDK version of the InCallService implementation.
+     */
+    private final int mTargetSdkVersion;
+
+    Phone(InCallAdapter adapter, String callingPackage, int targetSdkVersion) {
         mInCallAdapter = adapter;
         mCallingPackage = callingPackage;
+        mTargetSdkVersion = targetSdkVersion;
     }
 
     final void internalAddCall(ParcelableCall parcelableCall) {
         Call call = new Call(this, parcelableCall.getId(), mInCallAdapter,
-                parcelableCall.getState(), mCallingPackage);
+                parcelableCall.getState(), mCallingPackage, mTargetSdkVersion);
         mCallByTelecomCallId.put(parcelableCall.getId(), call);
         mCalls.add(call);
         checkCallTree(parcelableCall);