[Android] Allow text handles to observe position of "parent" view

content/public/android/java/src/org/chromium/content/browser/input/SelectionHandleController.java

Index: content/public/android/java/src/org/chromium/content/browser/input/SelectionHandleController.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/input/SelectionHandleController.java b/content/public/android/java/src/org/chromium/content/browser/input/SelectionHandleController.java
index 289dfa259c21e7938c7869811aa75221623421cd..f4da5f9ecf1a239484d3d81dafa334328bdc7d89 100644
--- a/content/public/android/java/src/org/chromium/content/browser/input/SelectionHandleController.java
+++ b/content/public/android/java/src/org/chromium/content/browser/input/SelectionHandleController.java
@@ -8,6 +8,8 @@ import android.view.View;
 
 import com.google.common.annotations.VisibleForTesting;
 
+import org.chromium.content.browser.PositionObserverInterface;
+
 /**
  * CursorController for selecting a range of text.
  */
@@ -28,13 +30,19 @@ public abstract class SelectionHandleController implements CursorController {
     /** Whether selection anchors are active. */
     private boolean mIsShowing;
 
-    private View mParent;
+    private HandleView.Delegate mStartHandleDelegate;
+    private HandleView.Delegate mEndHandleDelegate;
 
     private int mFixedHandleX;
     private int mFixedHandleY;
 
-    public SelectionHandleController(View parent) {
-        mParent = parent;
+    private PositionObserverInterface mPositionObserver;
+
+    public SelectionHandleController(HandleView.Delegate startHandleDelegate,
+            HandleView.Delegate endHandleDelegate, PositionObserverInterface positionObserver) {
+        mStartHandleDelegate = startHandleDelegate;
+        mEndHandleDelegate = endHandleDelegate;
+        mPositionObserver = positionObserver;
     }
 
     /** Automatically show selection anchors when text is selected. */
@@ -190,11 +198,13 @@ public abstract class SelectionHandleController implements CursorController {
     private void createHandlesIfNeeded(int startDir, int endDir) {
         if (mStartHandle == null) {
             mStartHandle = new HandleView(this,
-                startDir == TEXT_DIRECTION_RTL ? HandleView.RIGHT : HandleView.LEFT, mParent);
+                    startDir == TEXT_DIRECTION_RTL ? HandleView.RIGHT : HandleView.LEFT,
+                    mStartHandleDelegate, mPositionObserver);
         }
         if (mEndHandle == null) {
             mEndHandle = new HandleView(this,
-                endDir == TEXT_DIRECTION_RTL ? HandleView.LEFT : HandleView.RIGHT, mParent);
+                    endDir == TEXT_DIRECTION_RTL ? HandleView.LEFT : HandleView.RIGHT,
+                    mEndHandleDelegate, mPositionObserver);
         }
     }