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chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.mm

Index: chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.mm
===================================================================
--- chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.mm	(revision 119905)
+++ chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.mm	(working copy)
@@ -329,11 +329,8 @@
   model_->SetUserText(text);
   // TODO(shess): TODO below from gtk.
   // TODO(deanm): something about selection / focus change here.
-  SetText(display_text);
-  if (update_popup) {
-    UpdatePopup();
-  }
-  model_->OnChanged();
+  SetWindowTextAndCaretPos(display_text, display_text.length(), update_popup,
+      true);
 }
 
 NSRange OmniboxViewMac::GetSelectedRange() const {
@@ -364,9 +361,17 @@
 }
 
 void OmniboxViewMac::SetWindowTextAndCaretPos(const string16& text,
-                                              size_t caret_pos) {
+                                              size_t caret_pos,
+                                              bool update_popup,
+                                              bool notify_text_changed) {
   DCHECK_LE(caret_pos, text.size());
   SetTextAndSelectedRange(text, NSMakeRange(caret_pos, caret_pos));
+
+  if (update_popup)
+    UpdatePopup();
+
+  if (notify_text_changed)
+    TextChanged();
 }
 
 void OmniboxViewMac::SetForcedQuery() {
@@ -532,6 +537,11 @@
   }
 }
 
+void OmniboxViewMac::TextChanged() {
+  EmphasizeURLComponents();
+  model_->OnChanged();
+}
+
 void OmniboxViewMac::ApplyTextAttributes(const string16& display_text,
                                          NSMutableAttributedString* as) {
   NSUInteger as_length = [as length];
@@ -606,7 +616,7 @@
     saved_temporary_selection_ = GetSelectedRange();
 
   suggest_text_length_ = 0;
-  SetWindowTextAndCaretPos(display_text, display_text.size());
+  SetWindowTextAndCaretPos(display_text, display_text.size(), false, false);
   model_->OnChanged();
   [field_ clearUndoChain];
 }
@@ -698,8 +708,7 @@
   // Linux watches for something_changed && text_differs, but that
   // fails for us in case you copy the URL and paste the identical URL
   // back (we'll lose the styling).
-  EmphasizeURLComponents();
-  model_->OnChanged();
+  TextChanged();
 
   delete_was_pressed_ = false;
 
@@ -793,7 +802,7 @@
   if (cmd == @selector(deleteForward:))
     delete_was_pressed_ = true;
 
-  // Don't intercept up/down-arrow if the popup isn't open.
+  // Don't intercept up/down-arrow or backtab if the popup isn't open.
   if (popup_view_->IsOpen()) {
     if (cmd == @selector(moveDown:)) {
       model_->OnUpOrDownKeyPressed(1);
@@ -804,6 +813,13 @@
       model_->OnUpOrDownKeyPressed(-1);
       return true;
     }
+
+    if (cmd == @selector(insertBacktab:) &&
+        model_->popup_model()->selected_line_state() ==
+            AutocompletePopupModel::KEYWORD) {
+      model_->ClearKeyword(GetText());
+      return true;
+    }
   }
 
   if (cmd == @selector(moveRight:)) {
@@ -829,26 +845,10 @@
     return model_->OnEscapeKeyPressed();
   }
 
-  if (cmd == @selector(insertTab:) ||
-      cmd == @selector(insertTabIgnoringFieldEditor:)) {
-    if (model_->is_keyword_hint())
-      return model_->AcceptKeyword();
-
-    if (suggest_text_length_ > 0) {
-      model_->CommitSuggestedText(true);
-      return true;
-    }
-
-    if (!IsCaretAtEnd()) {
-      PlaceCaretAt(GetTextLength());
-      // OnDidChange() will not be triggered when setting selected range in this
-      // method, so we need to call it explicitly.
-      OnDidChange();
-      return true;
-    }
-
-    if (model_->AcceptCurrentInstantPreview())
-      return true;
+  if ((cmd == @selector(insertTab:) ||
+      cmd == @selector(insertTabIgnoringFieldEditor:)) &&
+      model_->is_keyword_hint()) {
+    return model_->AcceptKeyword();
   }
 
   // |-noop:| is sent when the user presses Cmd+Return. Override the no-op