Move UrlBar background drawing to CC.

chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerDocument.java

Index: chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerDocument.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerDocument.java b/chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerDocument.java
index 081d972a730c5d4c2877d847c83f01e5cd5ae6eb..73c0caaa5a10d7115867895164d3bab981bfac17 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerDocument.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerDocument.java
@@ -262,11 +262,13 @@ public class LayoutManagerDocument extends LayoutManager
 
         String url = tab.getUrl();
         boolean isNativePage = url != null && url.startsWith(UrlConstants.CHROME_NATIVE_SCHEME);
+        float textBoxAlpha = ColorUtils.getTextBoxAlphaForToolbarBackground(tab.getThemeColor());

[Yusuf, 2015/10/29 22:55:44]

I would say cash the color here and call ColorUtils directly without cashing the
alpha here like we do for the color.

[aurimas (slooooooooow), 2015/10/30 18:31:52]

Done

         boolean canUseLiveTexture =
                 tab.getContentViewCore() != null && !tab.isShowingSadTab() && !isNativePage;
         layoutTab.initFromHost(tab.getBackgroundColor(), tab.shouldStall(), canUseLiveTexture,
                 tab.getThemeColor(),
-                ColorUtils.getTextBoxColorForToolbarBackground(tab.getThemeColor()));
+                ColorUtils.getTextBoxColorForToolbarBackground(tab.getThemeColor()),
+                textBoxAlpha);
 
         mHost.requestRender();
     }