Prefix string16 with base:: in ui/.

ui/views/test/child_modal_window.cc

Index: ui/views/test/child_modal_window.cc
diff --git a/ui/views/test/child_modal_window.cc b/ui/views/test/child_modal_window.cc
index 510275c509a4ee7c9b936adb28d2028216894b16..a7eda41708bc75106794568e20af0c501dd242b3 100644
--- a/ui/views/test/child_modal_window.cc
+++ b/ui/views/test/child_modal_window.cc
@@ -65,7 +65,7 @@ class ChildModalWindow : public WidgetDelegateView {
 
   // Overridden from WidgetDelegate:
   virtual View* GetContentsView() OVERRIDE;
-  virtual string16 GetWindowTitle() const OVERRIDE;
+  virtual base::string16 GetWindowTitle() const OVERRIDE;
   virtual bool CanResize() const OVERRIDE;
   virtual ui::ModalType GetModalType() const OVERRIDE;
 
@@ -95,7 +95,7 @@ View* ChildModalWindow::GetContentsView() {
   return this;
 }
 
-string16 ChildModalWindow::GetWindowTitle() const {
+base::string16 ChildModalWindow::GetWindowTitle() const {
   return ASCIIToUTF16("Examples: Child Modal Window");
 }
 
@@ -159,7 +159,7 @@ View* ChildModalParent::GetContentsView() {
   return this;
 }
 
-string16 ChildModalParent::GetWindowTitle() const {
+base::string16 ChildModalParent::GetWindowTitle() const {
   return ASCIIToUTF16("Examples: Child Modal Parent");
 }