Inherit base classes for CCT dynamic module.

Bug: 873098
Change-Id: Ic349be8e16680b2ccbf08e7ecbdee9dab7987077
Reviewed-on: https://chromium-review.googlesource.com/1176081Reviewed-by: Michael van Ouwerkerk <mvanouwerkerk@chromium.org>
Commit-Queue: Anna Malova <amalova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#590319}

chrome/android/java/src/org/chromium/chrome/browser/customtabs/dynamicmodule/ActivityHostImpl.java

@@ -12,7 +12,7 @@ import org.chromium.chrome.browser.customtabs.CustomTabActivity;
 /**
  * The implementation of {@link IActivityHost}.
  */
-public class ActivityHostImpl extends IActivityHost.Stub {
+public class ActivityHostImpl extends BaseActivityHost {
     private final CustomTabActivity mActivity;
 
     public ActivityHostImpl(CustomTabActivity activity) {

chrome/android/java/src/org/chromium/chrome/browser/customtabs/dynamicmodule/ModuleHostImpl.java

@@ -9,7 +9,7 @@ import android.content.Context;
 /**
  * The implementation of {@link IModuleHost}.
  */
-public class ModuleHostImpl extends IModuleHost.Stub {
+public class ModuleHostImpl extends BaseModuleHost {
     private static final int VERSION = 3;
     private static final int MINIMUM_MODULE_VERSION = 1;