Change IME picker dialog from Activity to Broadcast

Change-Id: I7bc3c3aa5544f3cb170703d6e71bad1bd54545b8
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 1e12a67..55fa851 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -373,16 +373,12 @@
             </intent-filter>
         </activity>
 
-        <activity android:name=".inputmethod.InputMethodDialogActivity"
-                android:clearTaskOnLaunch="true">
+        <receiver android:name=".inputmethod.InputMethodDialogReceiver"
+                android:enabled="true">
             <intent-filter>
-                <action android:name="android.intent.action.MAIN" />
                 <action android:name="android.settings.SHOW_INPUT_METHOD_PICKER" />
-                <category android:name="android.intent.category.VOICE_LAUNCH" />
-                <category android:name="android.intent.category.DEFAULT" />
-                <category android:name="com.android.settings.SHORTCUT" />
             </intent-filter>
-        </activity>
+        </receiver>
 
         <activity android:name="Settings$UserDictionarySettingsActivity"
                 android:label="@string/user_dict_settings_titlebar"