Enable touch based selection and editing for webpages behind a flag.

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index ce8cb51b2de58f8d9bc45791875d416db8f9d79b..dfec98c6761b9686c8d9940eebd46a6eedcfdc2a 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -740,6 +740,9 @@ void RenderViewImpl::Initialize(RenderViewImplParams* params) {
   if (command_line.HasSwitch(switches::kEnableTouchDragDrop))
     webview()->settings()->setTouchDragDropEnabled(true);
 
+  if (command_line.HasSwitch(switches::kEnableTouchEditing))
+    webview()->settings()->setTouchEditingEnabled(true);
+
   if (!params->frame_name.empty())
     webview()->mainFrame()->setName(params->frame_name);
   webview()->settings()->setMinimumTimerInterval(
@@ -2188,6 +2191,11 @@ void RenderViewImpl::didExecuteCommand(const WebString& command_name) {
   RenderThreadImpl::current()->RecordUserMetrics(name);
 }
 
+void RenderViewImpl::didChangeTouchEditingHandleVisibility(bool visible) {
+  Send(new ViewHostMsg_TouchEditingHandlesVisibilityChanged(
+      routing_id(), visible));
+}
+
 bool RenderViewImpl::handleCurrentKeyboardEvent() {
   if (edit_commands_.empty())
     return false;
@@ -4784,6 +4792,7 @@ void RenderViewImpl::SyncSelectionIfRequired() {
   if (selection_text_offset_ != offset ||
       selection_range_ != range ||
       selection_text_ != text) {
+    webview()->updateTouchEditing();
     selection_text_ = text;
     selection_text_offset_ = offset;
     selection_range_ = range;