2 files changed, 21 insertions, 11 deletions

diff --git a/views/controls/resize_gripper.cc b/views/controls/resize_gripper.cc
index f443f33..59a13aa 100644
--- a/views/controls/resize_gripper.cc
+++ b/views/controls/resize_gripper.cc
@@ -64,22 +64,26 @@ bool ResizeGripper::OnMouseDragged(const views::MouseEvent& event) {
   if (!event.IsLeftMouseButton())
     return false;
 
-  gfx::Point point(event.x(), 0);
-  View::ConvertPointToScreen(this, &point);
-
-  delegate_->OnResize(point.x() - initial_position_, false);
+  ReportResizeAmount(event.x(), false);
   return true;
 }
 
 void ResizeGripper::OnMouseReleased(const views::MouseEvent& event,
                                     bool canceled) {
-  gfx::Point point(event.x(), 0);
-  View::ConvertPointToScreen(this, &point);
-
   if (canceled)
-    delegate_->OnResize(0, true);
+    ReportResizeAmount(initial_position_, true);
   else
-    delegate_->OnResize(point.x() - initial_position_, true);
+    ReportResizeAmount(event.x(), true);
+}
+
+void ResizeGripper::ReportResizeAmount(int resize_amount, bool last_update) {
+  gfx::Point point(resize_amount, 0);
+  View::ConvertPointToScreen(this, &point);
+  resize_amount = point.x() - initial_position_;
+
+  if (UILayoutIsRightToLeft())
+    resize_amount = -1 * resize_amount;
+  delegate_->OnResize(resize_amount, last_update);
 }
 
 }  // namespace views
diff --git a/views/controls/resize_gripper.h b/views/controls/resize_gripper.h
index 1b65066..204aa9f 100644
--- a/views/controls/resize_gripper.h
+++ b/views/controls/resize_gripper.h
@@ -27,8 +27,10 @@ class ResizeGripper : public ImageView {
   public:
     // OnResize is sent when resizing is detected. |resize_amount| specifies the
     // number of pixels that the user wants to resize by, and can be negative or
-    // positive (depending on direction of dragging). |done_resizing| is
-    // true if the user has released the mouse.
+    // positive (depending on direction of dragging and flips according to
+    // locale directionality: dragging to the left in LTR locales gives negative
+    // |resize_amount| but positive amount for RTL). |done_resizing| is true if
+    // the user has released the mouse.
     virtual void OnResize(int resize_amount, bool done_resizing) = 0;
   };
 
@@ -46,6 +48,10 @@ class ResizeGripper : public ImageView {
   static const char kViewClassName[];
 
  private:
+  // Report the amount the user resized by to the delegate, accounting for
+  // directionality.
+  void ReportResizeAmount(int resize_amount, bool last_update);
+
   // The delegate to notify when we have updates.
   ResizeGripperDelegate* delegate_;