Selection API: Do not change focus by Selection functions.

third_party/WebKit/Source/core/editing/FrameSelection.cpp

Index: third_party/WebKit/Source/core/editing/FrameSelection.cpp
diff --git a/third_party/WebKit/Source/core/editing/FrameSelection.cpp b/third_party/WebKit/Source/core/editing/FrameSelection.cpp
index e63d68bea411ac67e8396e9ed4b85b96bcd9ed8b..9749531655181942d4c7d075f03dbb7c97ea9f08 100644
--- a/third_party/WebKit/Source/core/editing/FrameSelection.cpp
+++ b/third_party/WebKit/Source/core/editing/FrameSelection.cpp
@@ -242,14 +242,17 @@ void FrameSelection::setSelection(const SelectionInDOMTree& passedSelection,
   // Always clear the x position used for vertical arrow navigation.
   // It will be restored by the vertical arrow navigation code if necessary.
   m_xPosForVerticalArrowNavigation = NoXPosForVerticalArrowNavigation();
-  // TODO(yosin): Can we move this to at end of this function?
-  // This may dispatch a synchronous focus-related events.
-  selectFrameElementInParentIfFullySelected();
-  if (!isAvailable() || document() != currentDocument) {
-    // editing/selection/selectallchildren-crash.html and
-    // editing/selection/longpress-selection-in-iframe-removed-crash.html
-    // reach here.
-    return;
+
+  if (!(options & DoNotSetFocus)) {
+    // TODO(yosin): Can we move this to at end of this function?  This may
+    // dispatch a synchronous focus-related events.
+    selectFrameElementInParentIfFullySelected();
+    if (!isAvailable() || document() != currentDocument) {
+      // editing/selection/selectallchildren-crash.html and
+      // editing/selection/longpress-selection-in-iframe-removed-crash.html
+      // reach here.
+      return;
+    }
   }
   EUserTriggered userTriggered = selectionOptionsToUserTriggered(options);
   notifyLayoutObjectOfSelectionChange(userTriggered);
@@ -368,7 +371,9 @@ static DispatchEventResult dispatchSelectStart(
 bool FrameSelection::modify(EAlteration alter,
                             SelectionDirection direction,
                             TextGranularity granularity,
-                            EUserTriggered userTriggered) {
+                            EUserTriggered userTriggered,
+                            SetSelectionOptions noFocusFlag) {
+  DCHECK(noFocusFlag == 0 || noFocusFlag == DoNotSetFocus);
   SelectionModifier selectionModifier(
       *frame(), computeVisibleSelectionInDOMTreeDeprecated(),
       m_xPosForVerticalArrowNavigation);
@@ -393,7 +398,7 @@ bool FrameSelection::modify(EAlteration alter,
   }
 
   const SetSelectionOptions options =
-      CloseTyping | ClearTypingStyle | userTriggered;
+      CloseTyping | ClearTypingStyle | userTriggered | noFocusFlag;
   setSelection(selectionModifier.selection(), options);
 
   if (granularity == LineGranularity || granularity == ParagraphGranularity)