Revert "Fix Emoji key feedback"

This reverts commit 953858d615.
The original CL should be split into two.

Change-Id: Ic1d032e2964a1b9bb44d98bdb8573c6cb47a865c

java/res/xml/kbd_emoji_category1.xml

@@ -27,5 +27,5 @@
     <GridRows
         latin:codesArray="@array/emoji_faces"
         latin:keyLabelFlags="fontNormal"
-        latin:backgroundType="normal" />
+        latin:backgroundType="empty" />
 </Keyboard>

java/res/xml/kbd_emoji_category2.xml

@@ -27,5 +27,5 @@
     <GridRows
         latin:codesArray="@array/emoji_objects"
         latin:keyLabelFlags="fontNormal"
-        latin:backgroundType="normal" />
+        latin:backgroundType="empty" />
 </Keyboard>

java/res/xml/kbd_emoji_category3.xml

@@ -27,5 +27,5 @@
     <GridRows
         latin:codesArray="@array/emoji_nature"
         latin:keyLabelFlags="fontNormal"
-        latin:backgroundType="normal" />
+        latin:backgroundType="empty" />
 </Keyboard>

java/res/xml/kbd_emoji_category4.xml

@@ -27,5 +27,5 @@
     <GridRows
         latin:codesArray="@array/emoji_places"
         latin:keyLabelFlags="fontNormal"
-        latin:backgroundType="normal" />
+        latin:backgroundType="empty" />
 </Keyboard>

java/res/xml/kbd_emoji_category5.xml

@@ -27,5 +27,5 @@
     <GridRows
         latin:codesArray="@array/emoji_symbols"
         latin:keyLabelFlags="fontNormal"
-        latin:backgroundType="normal" />
+        latin:backgroundType="empty" />
 </Keyboard>

java/res/xml/kbd_emoji_category6.xml

@@ -28,5 +28,5 @@
     <GridRows
         latin:textsArray="@array/emoji_emoticons"
         latin:keyLabelFlags="fontNormal"
-        latin:backgroundType="normal" />
+        latin:backgroundType="empty" />
 </Keyboard>

java/res/xml/kbd_emoji_recents.xml

@@ -28,5 +28,5 @@
     <GridRows
         latin:codesArray="@array/emoji_recents"
         latin:keyLabelFlags="fontNormal"
-        latin:backgroundType="normal" />
+        latin:backgroundType="empty" />
 </Keyboard>

java/src/com/android/inputmethod/keyboard/emoji/EmojiPageKeyboardView.java

@@ -148,7 +148,7 @@ final class EmojiPageKeyboardView extends KeyboardView implements
 
     void callListenerOnPressKey(final Key pressedKey) {
         mPendingKeyDown = null;
-        pressedKey.onPressed();
+        pressedKey.onReleased();
         invalidateKey(pressedKey);
         mListener.onPressKey(pressedKey);
     }