Remove ContainerViewObserver

content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java

Index: content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java b/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
index f7f3ccedb74ef11394aca7df48d17a9b69874e5d..84cf879a828b61dd3853d716b9307712cbe7e96d 100644
--- a/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
+++ b/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
@@ -429,7 +429,6 @@ public class ContentViewCore implements AccessibilityStateChangeListener, Screen
     private int mPotentiallyActiveFlingCount;
 
     private SmartClipDataListener mSmartClipDataListener = null;
-    private final ObserverList<ContainerViewObserver> mContainerViewObservers;
 
     /**
      * PID used to indicate an invalid render process.
@@ -498,7 +497,6 @@ public class ContentViewCore implements AccessibilityStateChangeListener, Screen
         mGestureStateListeners = new ObserverList<GestureStateListener>();
         mGestureStateListenersIterator = mGestureStateListeners.rewindableIterator();
 
-        mContainerViewObservers = new ObserverList<ContainerViewObserver>();
         mWindowAndroidChangedObservers = new ObserverList<WindowAndroidChangedObserver>();
     }
 
@@ -716,22 +714,11 @@ public class ContentViewCore implements AccessibilityStateChangeListener, Screen
 
             mContainerView = containerView;
             mContainerView.setClickable(true);
-            for (ContainerViewObserver observer : mContainerViewObservers) {
-                observer.onContainerViewChanged(mContainerView);
-            }
         } finally {
             TraceEvent.end("ContentViewCore.setContainerView");
         }
     }
 
-    public void addContainerViewObserver(ContainerViewObserver observer) {
-        mContainerViewObservers.addObserver(observer);
-    }
-
-    public void removeContainerViewObserver(ContainerViewObserver observer) {
-        mContainerViewObservers.removeObserver(observer);
-    }
-
     @CalledByNative
     private void onNativeContentViewCoreDestroyed(long nativeContentViewCore) {
         assert nativeContentViewCore == mNativeContentViewCore;
@@ -847,7 +834,6 @@ public class ContentViewCore implements AccessibilityStateChangeListener, Screen
         }
         mGestureStateListeners.clear();
         ScreenOrientationListener.getInstance().removeObserver(this);
-        mContainerViewObservers.clear();
         hidePopupsAndPreserveSelection();
         mPastePopupMenu = null;