Allow settings preference title to span over multiple lines.

- add singleLineTitle=false to SettingsPreference style, so that it will
not confined the title to a single line.
- remove the custom multi line title from DividerPreference and
MasterSwitchPreference.

Change-Id: I5a78d2cd6ac00c4482e252b0789fd2d265bd9adf
Fix: 34886787
Test: manual

src/com/android/settings/widget/MasterSwitchPreference.java

@@ -36,7 +36,6 @@ public class MasterSwitchPreference extends TwoTargetPreference {
 
     private Switch mSwitch;
     private boolean mChecked;
-    private boolean mMultiLine;
 
     public MasterSwitchPreference(Context context, AttributeSet attrs,
             int defStyleAttr, int defStyleRes) {
@@ -81,12 +80,6 @@ public class MasterSwitchPreference extends TwoTargetPreference {
         if (mSwitch != null) {
             mSwitch.setChecked(mChecked);
         }
-        if (mMultiLine) {
-            TextView textView = (TextView) holder.findViewById(android.R.id.title);
-            if (textView != null) {
-                textView.setSingleLine(false);
-            }
-        }
     }
 
     public boolean isChecked() {
@@ -106,14 +99,6 @@ public class MasterSwitchPreference extends TwoTargetPreference {
         }
     }
 
-    public boolean isMultiLine() {
-        return mMultiLine;
-    }
-
-    public void setMultiLine(boolean multiLine) {
-        mMultiLine = multiLine;
-    }
-
     /**
      * If admin is not null, disables the switch.
      * Otherwise, keep it enabled.