Fade theme color in tab switcher

chrome/android/java/src/org/chromium/chrome/browser/toolbar/ToolbarPhone.java

Index: chrome/android/java/src/org/chromium/chrome/browser/toolbar/ToolbarPhone.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/toolbar/ToolbarPhone.java b/chrome/android/java/src/org/chromium/chrome/browser/toolbar/ToolbarPhone.java
index 003b5cc31fdc17f9cbaf41749d806692612fb625..c02cc408a9b7b1e72ed668492c1014587a87350b 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/toolbar/ToolbarPhone.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/toolbar/ToolbarPhone.java
@@ -76,6 +76,9 @@ public class ToolbarPhone extends ToolbarLayout
         implements Invalidator.Client, OnClickListener, OnLongClickListener,
                 NewTabPage.OnSearchBoxScrollListener {
 
+    /** The amount of time transitioning from one theme color to another should take in ms. */
+    public static final long THEME_COLOR_TRANSITION_DURATION = 250;
+
     public static final int URL_FOCUS_CHANGE_ANIMATION_DURATION_MS = 250;
     private static final int URL_FOCUS_TOOLBAR_BUTTONS_TRANSLATION_X_DP = 10;
     private static final int URL_FOCUS_TOOLBAR_BUTTONS_DURATION_MS = 100;
@@ -89,8 +92,6 @@ public class ToolbarPhone extends ToolbarLayout
 
     private static final float UNINITIALIZED_PERCENT = -1f;
 
-    private static final int BRAND_COLOR_TRANSITION_DURATION_MS = 250;
-
     private static final String TAG = "ToolbarPhone";
 
     static final int LOCATION_BAR_TRANSPARENT_BACKGROUND_ALPHA = 51;
@@ -1859,7 +1860,7 @@ public class ToolbarPhone extends ToolbarLayout
                 shouldUseOpaque ? 255 : LOCATION_BAR_TRANSPARENT_BACKGROUND_ALPHA;
         final boolean shouldAnimateAlpha = initialAlpha != finalAlpha;
         mBrandColorTransitionAnimation = ValueAnimator.ofFloat(0, 1)
-                .setDuration(BRAND_COLOR_TRANSITION_DURATION_MS);
+                .setDuration(THEME_COLOR_TRANSITION_DURATION);
         mBrandColorTransitionAnimation.setInterpolator(BakedBezierInterpolator.TRANSFORM_CURVE);
         mBrandColorTransitionAnimation.addUpdateListener(new AnimatorUpdateListener() {
             @Override