Fix projection touch HUD in RTL

ash/touch/touch_hud_projection.cc

Index: ash/touch/touch_hud_projection.cc
diff --git a/ash/touch/touch_hud_projection.cc b/ash/touch/touch_hud_projection.cc
index 3a834a57eceb6f0598d706021e11be7f8ec4b75a..73041306712995defde34e8a2922923ee9698d40 100644
--- a/ash/touch/touch_hud_projection.cc
+++ b/ash/touch/touch_hud_projection.cc
@@ -35,7 +35,8 @@ class TouchPointView : public views::View,
   explicit TouchPointView(views::Widget* parent_widget)
       : circle_center_(kPointRadius + 1, kPointRadius + 1),
         gradient_center_(SkPoint::Make(kPointRadius + 1,
-                                       kPointRadius + 1)) {
+                                       kPointRadius + 1)),
+        parent_(parent_widget->GetContentsView()) {
     SetPaintToLayer(true);
     SetFillsBoundsOpaquely(false);
 
@@ -50,7 +51,7 @@ class TouchPointView : public views::View,
     gradient_pos_[0] = SkFloatToScalar(0.9f);
     gradient_pos_[1] = SkFloatToScalar(1.0f);
 
-    parent_widget->GetContentsView()->AddChildView(this);
+    parent_->AddChildView(this);
 
     parent_widget->AddObserver(this);
   }
@@ -63,8 +64,11 @@ class TouchPointView : public views::View,
                                              this));
       fadeout_->Start();
     } else {
-      SetX(touch.root_location().x() - kPointRadius - 1);

[sadrul, 2013/07/15 21:44:06]

Can you use:
  SetX(parent()->GetMirroredXInView(touch.root_location().x()) - kPointRadius -
1);
instead?

[mohsen, 2013/07/15 22:10:52]

Yes, much better. Done.

-      SetY(touch.root_location().y() - kPointRadius - 1);
+      gfx::Point position(touch.root_location().x() - kPointRadius - 1,
+                          touch.root_location().y() - kPointRadius - 1);
+      if (base::i18n::IsRTL())
+        position.set_x(parent_->width() - position.x() - width());
+      SetPosition(position);
     }
   }
 
@@ -124,6 +128,8 @@ class TouchPointView : public views::View,
   const gfx::Point circle_center_;
   const SkPoint gradient_center_;
 
+  View* parent_;
+
   SkPaint fill_paint_;
   SkPaint stroke_paint_;
   SkColor gradient_colors_[2];