Smart Select shouldn't shorten selection

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

 // Copyright 2015 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.TargetApi;
 import android.app.Activity;
 import android.app.SearchManager;
 import android.content.ClipboardManager;
@@ skipping 1016 matching lines @@
         @Override
         public void onClassified(ContextSelectionProvider.Result result) {
             // If the selection does not exist any more, discard |result|.
             if (!mHasSelection) {
                 assert !mHidden;
                 assert mClassificationResult == null;
                 mPendingShowActionMode = false;
                 return;
             }
 
+            // Do not allow classifier to shorten the selection. If the suggested selection is
+            // smaller than the original we throw away classification result and show the menu.
+            // TODO(amaralp): This was added to fix the SelectAll problem in
+            // http://crbug.com/714106. Once we know the cause of the original selection we can
+            // remove this check.
+            if (result.startAdjust > 0 || result.endAdjust < 0) {
+                mClassificationResult = null;
+                mPendingShowActionMode = false;
+                showActionModeOrClearOnFailure();
+                return;
+            }
+
             // The classificationresult is a property of the selection. Keep it even the action
             // mode has been dismissed.
             mClassificationResult = result;
 
             // Do not recreate the action mode if it has been cancelled (by ActionMode.finish())
             // and not recreated after that.
             if (!mPendingShowActionMode && !isActionModeValid()) {
                 assert !mHidden;
                 return;
             }
 
             // Update the selection range if needed.
             if (!(result.startAdjust == 0 && result.endAdjust == 0)) {
                 // This call causes SELECTION_HANDLES_MOVED event.
                 mWebContents.adjustSelectionByCharacterOffset(result.startAdjust, result.endAdjust);
 
                 // Remain pending until SELECTION_HANDLES_MOVED arrives.
                 if (mPendingShowActionMode) return;
             }
 
             // Rely on this method to clear |mHidden| and unhide the action mode.
             showActionModeOrClearOnFailure();
         }
     };
 
     private native void nativeInit(WebContents webContents);
 }