[Home] Fix toolbar color when switching tab models

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

Index: chrome/android/java/src/org/chromium/chrome/browser/toolbar/BottomToolbarPhone.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/toolbar/BottomToolbarPhone.java b/chrome/android/java/src/org/chromium/chrome/browser/toolbar/BottomToolbarPhone.java
index dc8f17ea993baaae556eeb57af3d259fb882c9c2..818de37bf0b0c850204a2f1651b167cc8835981d 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/toolbar/BottomToolbarPhone.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/toolbar/BottomToolbarPhone.java
@@ -136,6 +136,13 @@ public class BottomToolbarPhone extends ToolbarPhone {
         return !ColorUtils.shouldUseLightForegroundOnBackground(getTabThemeColor());
     }
 
+    /**
+     * @return True if the toolbar is showing tab switcher assets, including during transitions.
+     */
+    public boolean isInTabSwitcherMode() {
+        return mTabSwitcherState != STATIC_TAB;
+    }
+
     @Override
     protected int getProgressBarTopMargin() {
         // In the case where the toolbar is at the bottom of the screen, the progress bar should