CB-10937 fix stretched icons

This closes # 157
diff --git a/src/android/InAppBrowser.java b/src/android/InAppBrowser.java
index 3a4a6a4..5bf4d3a 100644
--- a/src/android/InAppBrowser.java
+++ b/src/android/InAppBrowser.java
@@ -19,7 +19,6 @@
 package org.apache.cordova.inappbrowser;
 
 import android.annotation.SuppressLint;
-import org.apache.cordova.inappbrowser.InAppBrowserDialog;
 import android.content.Context;
 import android.content.Intent;
 import android.provider.Browser;
@@ -46,8 +45,9 @@
 import android.webkit.WebSettings;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
-import android.widget.Button;
 import android.widget.EditText;
+import android.widget.ImageButton;
+import android.widget.ImageView;
 import android.widget.LinearLayout;
 import android.widget.RelativeLayout;
 
@@ -564,7 +564,7 @@
                 actionButtonContainer.setId(Integer.valueOf(1));
 
                 // Back button
-                Button back = new Button(cordova.getActivity());
+                ImageButton back = new ImageButton(cordova.getActivity());
                 RelativeLayout.LayoutParams backLayoutParams = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT);
                 backLayoutParams.addRule(RelativeLayout.ALIGN_LEFT);
                 back.setLayoutParams(backLayoutParams);
@@ -572,15 +572,13 @@
                 back.setId(Integer.valueOf(2));
                 Resources activityRes = cordova.getActivity().getResources();
                 int backResId = activityRes.getIdentifier("ic_action_previous_item", "drawable", cordova.getActivity().getPackageName());
-                Drawable backIcon = activityRes.getDrawable(backResId);
-                if(android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.JELLY_BEAN)
-                {
-                    back.setBackgroundDrawable(backIcon);
-                }
-                else
-                {
-                    back.setBackground(backIcon);
-                }
+                Drawable backIcon = activityRes.getDrawable(backResId, cordova.getActivity().getTheme());
+                back.setBackground(null);
+                back.setImageDrawable(backIcon);
+                back.setScaleType(ImageView.ScaleType.FIT_CENTER);
+                back.setPadding(0, this.dpToPixels(10), 0, this.dpToPixels(10));
+                back.getAdjustViewBounds();
+
                 back.setOnClickListener(new View.OnClickListener() {
                     public void onClick(View v) {
                         goBack();
@@ -588,7 +586,7 @@
                 });
 
                 // Forward button
-                Button forward = new Button(cordova.getActivity());
+                ImageButton forward = new ImageButton(cordova.getActivity());
                 RelativeLayout.LayoutParams forwardLayoutParams = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT);
                 forwardLayoutParams.addRule(RelativeLayout.RIGHT_OF, 2);
                 forward.setLayoutParams(forwardLayoutParams);
@@ -596,14 +594,12 @@
                 forward.setId(Integer.valueOf(3));
                 int fwdResId = activityRes.getIdentifier("ic_action_next_item", "drawable", cordova.getActivity().getPackageName());
                 Drawable fwdIcon = activityRes.getDrawable(fwdResId);
-                if(android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.JELLY_BEAN)
-                {
-                    forward.setBackgroundDrawable(fwdIcon);
-                }
-                else
-                {
-                    forward.setBackground(fwdIcon);
-                }
+                forward.setBackground(null);
+                forward.setImageDrawable(fwdIcon);
+                forward.setScaleType(ImageView.ScaleType.FIT_CENTER);
+                forward.setPadding(0, this.dpToPixels(10), 0, this.dpToPixels(10));
+                forward.getAdjustViewBounds();
+
                 forward.setOnClickListener(new View.OnClickListener() {
                     public void onClick(View v) {
                         goForward();
@@ -634,7 +630,7 @@
                 });
 
                 // Close/Done button
-                Button close = new Button(cordova.getActivity());
+                ImageButton close = new ImageButton(cordova.getActivity());
                 RelativeLayout.LayoutParams closeLayoutParams = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT);
                 closeLayoutParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
                 close.setLayoutParams(closeLayoutParams);
@@ -642,14 +638,12 @@
                 close.setId(Integer.valueOf(5));
                 int closeResId = activityRes.getIdentifier("ic_action_remove", "drawable", cordova.getActivity().getPackageName());
                 Drawable closeIcon = activityRes.getDrawable(closeResId);
-                if(android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.JELLY_BEAN)
-                {
-                    close.setBackgroundDrawable(closeIcon);
-                }
-                else
-                {
-                    close.setBackground(closeIcon);
-                }
+                close.setBackground(null);
+                close.setImageDrawable(closeIcon);
+                close.setScaleType(ImageView.ScaleType.FIT_CENTER);
+                back.setPadding(0, this.dpToPixels(10), 0, this.dpToPixels(10));
+                close.getAdjustViewBounds();
+
                 close.setOnClickListener(new View.OnClickListener() {
                     public void onClick(View v) {
                         closeDialog();
@@ -675,7 +669,7 @@
 
                 String overrideUserAgent = preferences.getString("OverrideUserAgent", null);
                 String appendUserAgent = preferences.getString("AppendUserAgent", null);
-                
+
                 if (overrideUserAgent != null) {
                     settings.setUserAgentString(overrideUserAgent);
                 }