3 files changed, 11 insertions, 1 deletions
diff --git a/chrome/browser/gtk/tabs/dragged_tab_controller_gtk.cc b/chrome/browser/gtk/tabs/dragged_tab_controller_gtk.cc
index 59c69ce..db61ce9 100644
--- a/chrome/browser/gtk/tabs/dragged_tab_controller_gtk.cc
+++ b/chrome/browser/gtk/tabs/dragged_tab_controller_gtk.cc
@@ -287,7 +287,9 @@ TabStripGtk* DraggedTabControllerGtk::GetTabStripForPoint(
     return NULL;
 
   TabStripGtk* other_tabstrip = browser->tabstrip();
-  // TODO(jhawkins): Make sure the tabstrips are compatible.
+  if (!other_tabstrip->IsCompatibleWith(source_tabstrip_))
+    return NULL;
+
   return GetTabStripIfItContains(other_tabstrip, screen_point);
 }
 
diff --git a/chrome/browser/gtk/tabs/tab_strip_gtk.cc b/chrome/browser/gtk/tabs/tab_strip_gtk.cc
index d145296..8db7a38 100644
--- a/chrome/browser/gtk/tabs/tab_strip_gtk.cc
+++ b/chrome/browser/gtk/tabs/tab_strip_gtk.cc
@@ -544,6 +544,10 @@ void TabStripGtk::UpdateLoadingAnimations() {
   gtk_widget_queue_draw(tabstrip_.get());
 }
 
+bool TabStripGtk::IsCompatibleWith(TabStripGtk* other) {
+  return model_->profile() == other->model()->profile();
+}
+
 bool TabStripGtk::IsAnimating() const {
   return active_animation_.get() != NULL;
 }
diff --git a/chrome/browser/gtk/tabs/tab_strip_gtk.h b/chrome/browser/gtk/tabs/tab_strip_gtk.h
index cf90088..0b3a809 100644
--- a/chrome/browser/gtk/tabs/tab_strip_gtk.h
+++ b/chrome/browser/gtk/tabs/tab_strip_gtk.h
@@ -59,6 +59,10 @@ class TabStripGtk : public TabStripModelObserver,
   // Updates loading animations for the TabStrip.
   void UpdateLoadingAnimations();
 
+  // Return true if this tab strip is compatible with the provided tab strip.
+  // Compatible tab strips can transfer tabs during drag and drop.
+  bool IsCompatibleWith(TabStripGtk* other);
+
   // Returns true if Tabs in this TabStrip are currently changing size or
   // position.
   bool IsAnimating() const;