Require ACK for editor-related changes not originating from browser.

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 98c2b6928ac1d3531cf872de15dab108a3866f0b..63721dac14a42b40f146def6bc95076099a418e2 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -1710,6 +1710,8 @@ void RenderViewImpl::OnSetName(const std::string& name) {
 
 void RenderViewImpl::OnSetEditableSelectionOffsets(int start, int end) {
   base::AutoReset<bool> handling_select_range(&handling_select_range_, true);
+  if (RenderWidget::HasOutstandingImeEventAcknowledgements())

[aurimas (slooooooooow), 2013/07/08 16:04:49]

Maybe we should create a call shouldProcessImeEvent() that has this check?

[nyquist, 2013/07/09 07:47:36]

Done.

+    return;
   ImeEventGuard guard(this);
   webview()->setEditableSelectionOffsets(start, end);
 }
@@ -1719,6 +1721,8 @@ void RenderViewImpl::OnSetCompositionFromExistingText(
     const std::vector<WebKit::WebCompositionUnderline>& underlines) {
   if (!webview())
     return;
+  if (RenderWidget::HasOutstandingImeEventAcknowledgements())
+    return;
   ImeEventGuard guard(this);
   webview()->setCompositionFromExistingText(start, end, underlines);
 }
@@ -1726,6 +1730,8 @@ void RenderViewImpl::OnSetCompositionFromExistingText(
 void RenderViewImpl::OnExtendSelectionAndDelete(int before, int after) {
   if (!webview())
     return;
+  if (RenderWidget::HasOutstandingImeEventAcknowledgements())
+    return;
   ImeEventGuard guard(this);
   webview()->extendSelectionAndDelete(before, after);
 }
@@ -2320,8 +2326,10 @@ void RenderViewImpl::didCancelCompositionOnSelectionChange() {
 }
 
 void RenderViewImpl::didChangeSelection(bool is_empty_selection) {
-  if (!handling_input_event_ && !handling_select_range_)
+  if (!handling_input_event_ && !handling_select_range_ &&
+      !RenderWidget::has_strict_ime_processing()) {
     return;
+  }
 
   if (is_empty_selection)
     selection_text_.clear();