TransformOperations should be able to blend outside the range [0, 1]

cc/animation/transform_operations.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/animation/transform_operations.h"
 
 #include <algorithm>
 
 #include "ui/gfx/transform_util.h"
 #include "ui/gfx/vector3d_f.h"
@@ skipping 146 matching lines @@
           from_identity ? 0 : &from.operations_[i],
           to_identity ? 0 : &operations_[i],
           progress,
           &blended))
           return false;
       result->PreconcatTransform(blended);
     }
     return true;
   }
 
-  if (progress <= 0.0) {
-    *result = from.Apply();
-    return true;
-  }
-
-  if (progress >= 1.0) {
-    *result = Apply();
-    return true;
-  }
-
   if (!ComputeDecomposedTransform() || !from.ComputeDecomposedTransform())
     return false;
 
   gfx::DecomposedTransform to_return;
   if (!gfx::BlendDecomposedTransforms(&to_return,
                                       *decomposed_transform_.get(),
                                       *from.decomposed_transform_.get(),
                                       progress))
     return false;
 
   *result = ComposeTransform(to_return);
   return true;
 }
 
 bool TransformOperations::ComputeDecomposedTransform() const {
   if (decomposed_transform_dirty_) {
     if (!decomposed_transform_)
       decomposed_transform_.reset(new gfx::DecomposedTransform());
     gfx::Transform transform = Apply();
     if (!gfx::DecomposeTransform(decomposed_transform_.get(), transform))
       return false;
     decomposed_transform_dirty_ = false;
   }
   return true;
 }
 
 }  // namespace cc