Paste popup is positioning properly during content scroll.

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

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.content.browser;
 
 import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.app.SearchManager;
 import android.content.ClipboardManager;
@@ skipping 2133 matching lines @@
                 mHasSelection = false;
                 mUnselectAllOnActionModeDismiss = false;
                 hideSelectActionBar();
                 break;
 
             case SelectionEventType.INSERTION_SHOWN:
                 mHasInsertion = true;
                 break;
 
             case SelectionEventType.INSERTION_MOVED:
-                // TODO(jdduke): Handle case where movement triggered by focus.
-                hidePastePopup();
+                if (getPastePopup().isShowing() && !isScrollInProgress()) {

[jdduke (slow), 2014/07/22 17:39:33]

What about the case where the insertion handle is dragged? We definitely want to
hide it in that case. I suppose we could have an event |INSERTION_DRAG_BEGUN|
that would trigger hiding?

[AKVT, 2014/07/23 16:27:46]

Done.

+                    hidePastePopup();
+                    showPastePopup((int) posXDip, (int) posYDip);
+                } else {
+                    hidePastePopup();
+                }
                 break;
 
             case SelectionEventType.INSERTION_TAPPED:
                 if (getPastePopup().isShowing())
                     mPastePopupMenu.hide();
                 else
                     showPastePopup((int) posXDip, (int) posYDip);
                 break;
 
             case SelectionEventType.INSERTION_CLEARED:
@@ skipping 1062 matching lines @@
 
     private native void nativeExtractSmartClipData(long nativeContentViewCoreImpl,
             int x, int y, int w, int h);
     private native void nativeSetBackgroundOpaque(long nativeContentViewCoreImpl, boolean opaque);
 
     private native void nativeResumeResponseDeferredAtStart(
             long nativeContentViewCoreImpl);
     private native void nativeSetHasPendingNavigationTransitionForTesting(
             long nativeContentViewCoreImpl);
 }