Make infobars hide on scroll

chrome/android/java/src/org/chromium/chrome/browser/Tab.java

Index: chrome/android/java/src/org/chromium/chrome/browser/Tab.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/Tab.java b/chrome/android/java/src/org/chromium/chrome/browser/Tab.java
index 5091dccfc0f094072c2e25a5e3868816c8e5ef91..cf42f8912a8f2e9335206f488baff4aa066eaadd 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/Tab.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/Tab.java
@@ -1252,7 +1252,6 @@ public class Tab implements ViewGroup.OnHierarchyChangeListener,
 
         updateTitle();
         removeSadTabIfPresent();
-        mInfoBarContainer.onPageStarted();
 
         if (getContentViewCore() != null) {
             getContentViewCore().stopCurrentAccessibilityNotifications();
@@ -1358,10 +1357,11 @@ public class Tab implements ViewGroup.OnHierarchyChangeListener,
             // initialized.
             WebContents webContents = mContentViewCore.getWebContents();
             mInfoBarContainer = new InfoBarContainer(
-                    mContext, getId(), mContentViewParent, webContents);
+                    mContext, getId(), mContentViewParent, webContents, this);
         } else {
             mInfoBarContainer.onParentViewChanged(getId(), mContentViewParent);
         }
+        mInfoBarContainer.setContentViewCore(mContentViewCore);
 
         if (AppBannerManager.isEnabled() && mAppBannerManager == null) {
             mAppBannerManager = new AppBannerManager(this);
@@ -1766,6 +1766,7 @@ public class Tab implements ViewGroup.OnHierarchyChangeListener,
 
         if (mInfoBarContainer != null && mInfoBarContainer.getParent() != null) {
             mInfoBarContainer.removeFromParentView();
+            mInfoBarContainer.setContentViewCore(null);
         }
         mContentViewParent = null;
         mContentViewCore.destroy();