Notification custom layouts: paint the button icon for Material.

chrome/android/javatests/src/org/chromium/chrome/browser/notifications/CustomNotificationBuilderTest.java

Index: chrome/android/javatests/src/org/chromium/chrome/browser/notifications/CustomNotificationBuilderTest.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/notifications/CustomNotificationBuilderTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/notifications/CustomNotificationBuilderTest.java
index 25f52546a0eff01eafb00dd7425adaccb6ca6f09..079c8a5d533374ce3df2f6aa7bbc99a156dfee19 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/notifications/CustomNotificationBuilderTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/notifications/CustomNotificationBuilderTest.java
@@ -172,6 +172,21 @@ public void testCalculateScaledPadding() {
         assertEquals(0, CustomNotificationBuilder.calculateScaledPadding(1000.0f, metrics));
     }
 
+    @SmallTest
+    @Feature({"Browser", "Notifications"})
+    public void testPaintBitmap() {
+        // The method under test uses PorterDuff.Mode.MULTIPLY so the more opaque the black you
+        // paint with on the white, the darker it gets.
+        assertEquals(Color.parseColor("#ffffffff"), CustomNotificationBuilder.paintBitmap(

[newt (away), 2015/11/16 17:50:09]

You can just write "0xffffffff" instead of "Color.parseColor("#ffffffff")"

[Michael van Ouwerkerk, 2015/11/17 12:00:24]

Done. Nice cleanup.

+                createWhiteBitmap(), Color.parseColor("#00000000")).getPixel(0, 0));
+        assertEquals(Color.parseColor("#ffcccccc"), CustomNotificationBuilder.paintBitmap(
+                createWhiteBitmap(), Color.parseColor("#33000000")).getPixel(0, 0));
+        assertEquals(Color.parseColor("#ff333333"), CustomNotificationBuilder.paintBitmap(
+                createWhiteBitmap(), Color.parseColor("#cc000000")).getPixel(0, 0));
+        assertEquals(Color.parseColor("#ff000000"), CustomNotificationBuilder.paintBitmap(
+                createWhiteBitmap(), Color.parseColor("#ff000000")).getPixel(0, 0));
+    }
+
     /**
      * Finds a TextView with the given id in each of the given views, and checks that they all
      * contain the same text.
@@ -205,4 +220,13 @@ private static String createString(char character, int length) {
         Arrays.fill(chars, character);
         return new String(chars);
     }
+
+    /**
+     * Creates a 1x1 white mutable Bitmap.
+     */
+    private static Bitmap createWhiteBitmap() {
+        int[] colors = {Color.WHITE};
+        Bitmap immutableBitmap = Bitmap.createBitmap(colors, 1, 1, Bitmap.Config.ARGB_8888);
+        return immutableBitmap.copy(Bitmap.Config.ARGB_8888, true /* isMutable */);
+    }
 }