Move UrlBar background drawing to CC.

chrome/android/java/src/org/chromium/chrome/browser/util/ColorUtils.java

Index: chrome/android/java/src/org/chromium/chrome/browser/util/ColorUtils.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/util/ColorUtils.java b/chrome/android/java/src/org/chromium/chrome/browser/util/ColorUtils.java
index 0057cea92b35677aa0a2ef24c68b857af2789a44..a07f3c91143b71a98865ebbbd479e4a5343ac1ab 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/util/ColorUtils.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/util/ColorUtils.java
@@ -54,6 +54,14 @@ public class ColorUtils {
     }
 
     /**
+     * @return Alpha for the textbox given a toolbar background color.
+     */
+    public static float getTextBoxAlphaForToolbarBackground(int color) {
+        return shouldUseOpaqueTextboxBackground(color)
+                ? 1f : LOCATION_BAR_TRANSPARENT_BACKGROUND_ALPHA;
+    }
+
+    /**
      * Gets the background color for light theme progress bar.
      * @param toolbarColor The color of the toolbar.
      * @return The color of the progress bar in light theme, given the toolbar color.