UnifiedEmail: start EmlViewerAcitivty will force close

first,'.eml' suffix just a email.
click a the '.eml' suffix attachment,
will start EmlViewerActivity to preview file.
but will force close,and prompt need to use
a Theme.AppCompat theme with this acitivity.
link with 1728004,
just change extends fromActionBarActivity to Activity.
now resume this modification,change to use a theme of
Theme.AppCompat

Change-Id: I5179330655716348913f10a4cb4885f14e13b752
CRs-Fixed: 1102274
diff --git a/res/values/themes.xml b/res/values/themes.xml
index 2cee638..bef9473 100644
--- a/res/values/themes.xml
+++ b/res/values/themes.xml
@@ -25,6 +25,14 @@
         <item name="homeAsUpIndicator">@drawable/ic_arrow_back_wht_24dp_with_rtl</item>
     </style>
 
+    <style name="EmlViewerTheme.Appcompat" parent="@style/UnifiedEmailTheme.Appcompat">
+        <item name="android:actionBarStyle">@style/ActionBarStyle</item>
+        <item name="android:actionBarWidgetTheme">@style/ActionBarWidgetTheme</item>
+        <item name="android:actionOverflowButtonStyle">@style/ActionBarOverflowButtonStyle</item>
+        <item name="android:listViewWhiteStyle">@android:style/Widget.Holo.Light.ListView</item>
+    </style>
+
+
     <style name="UnifiedEmailTheme.Appcompat.Toolbar" parent="@style/Theme.AppCompat.Light.NoActionBar">
         <item name="actionBarPopupTheme">@style/ThemeOverlay.AppCompat.Light</item>
         <item name="actionModeBackground">@color/action_mode_background</item>
diff --git a/src/com/android/mail/ui/AccountFeedbackActivity.java b/src/com/android/mail/ui/AccountFeedbackActivity.java
index bbcb9f5..74e99e4 100644
--- a/src/com/android/mail/ui/AccountFeedbackActivity.java
+++ b/src/com/android/mail/ui/AccountFeedbackActivity.java
@@ -24,8 +24,8 @@
 import com.android.mail.providers.UIProvider;
 import com.android.mail.utils.Utils;
 
-import android.app.ActionBar;
-import android.app.Activity;
+import android.support.v7.app.ActionBar;
+import android.support.v7.app.ActionBarActivity;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
@@ -37,7 +37,7 @@
  * as well as showing settings/help/send feedback in the action
  * overflow menu.
  */
-public abstract class AccountFeedbackActivity extends Activity
+public abstract class AccountFeedbackActivity extends ActionBarActivity
         implements ConversationAccountController, AccountLoadCallbacks.AccountLoadCallbackListener {
     public static final String EXTRA_ACCOUNT_URI = "extra-account-uri";
 
@@ -57,7 +57,8 @@
         super.onCreate(savedInstanceState);
         setContentView(R.layout.account_feedback_activity);
 
-        final ActionBar actionBar = getActionBar();
+
+        final ActionBar actionBar = getSupportActionBar();;
         actionBar.setDisplayHomeAsUpEnabled(true);
 
         final Intent intent = getIntent();