Reland r107720 - Enable the new layer animation framework.

chrome/browser/ui/touch/animation/screen_rotation.h

Index: chrome/browser/ui/touch/animation/screen_rotation.h
diff --git a/chrome/browser/ui/touch/animation/screen_rotation.h b/chrome/browser/ui/touch/animation/screen_rotation.h
index 7b462709435cff3c821bb0203c719ba4816465b8..5dd5ba6b4be5200d284ee40c9ca87f4871777414 100644
--- a/chrome/browser/ui/touch/animation/screen_rotation.h
+++ b/chrome/browser/ui/touch/animation/screen_rotation.h
@@ -17,6 +17,7 @@
 namespace ui {
 class InterpolatedTransform;
 class Layer;
+class LayerAnimationDelegate;
 class SlideAnimation;
 class Transform;
 }
@@ -51,6 +52,7 @@ class ScreenRotation : public ui::AnimationDelegate,
   // The screen rotation does not own the view or the listener, and these
   // objects are required to outlive the Screen rotation object.
   ScreenRotation(views::View* view,
+                 ui::LayerAnimationDelegate* delegate,
                  ScreenRotationListener* listener,
                  float old_degrees,
                  float new_degrees);
@@ -92,6 +94,11 @@ class ScreenRotation : public ui::AnimationDelegate,
   // update the bounds.
   views::View* view_;
 
+  // This is the delegate that will be modified during the rotation. It is
+  // important not to modify the rotation directly, otherwise we will cause
+  // other, implicit animations.
+  ui::LayerAnimationDelegate* delegate_;
+
   // This widget will be used for scheduling paints.
   views::Widget* widget_;