cc: Make PictureLayerImpl use a better choice for animated raster scale.

cc/animation/transform_operations.h

Index: cc/animation/transform_operations.h
diff --git a/cc/animation/transform_operations.h b/cc/animation/transform_operations.h
index f086eb1baac1d7a0405189066569d8878e383f64..1c110fffc75a0964520c26b1879ad4155934f799 100644
--- a/cc/animation/transform_operations.h
+++ b/cc/animation/transform_operations.h
@@ -63,14 +63,6 @@ class CC_EXPORT TransformOperations {
   // Returns true if these operations are only translations.
   bool IsTranslation() const;
 
-  // Sets |max_scale| to be the maximum scale in any dimension when calling
-  // Blend on |from| with progress in the range [min_progress, max_progress]. If
-  // this maximum scale cannot be computed, returns false.
-  bool MaximumScale(const TransformOperations& from,
-                    SkMScalar min_progress,
-                    SkMScalar max_progress,
-                    float* max_scale) const;
-
   // Returns true if this operation and its descendants have the same types
   // as other and its descendants.
   bool MatchesTypes(const TransformOperations& other) const;
@@ -80,6 +72,11 @@ class CC_EXPORT TransformOperations {
   // fails (this can happen if either matrix cannot be decomposed).
   bool CanBlendWith(const TransformOperations& other) const;
 
+  // If these operations have no more than one scale operation, and if the only
+  // other operations are translations, sets |scale| to the scale component
+  // of these operations. Otherwise, returns false.
+  bool ScaleComponent(gfx::Vector3dF* scale) const;
+
   void AppendTranslate(SkMScalar x, SkMScalar y, SkMScalar z);
   void AppendRotate(SkMScalar x, SkMScalar y, SkMScalar z, SkMScalar degrees);
   void AppendScale(SkMScalar x, SkMScalar y, SkMScalar z);
@@ -98,11 +95,6 @@ class CC_EXPORT TransformOperations {
 
   bool ComputeDecomposedTransform() const;
 
-  // If these operations have no more than one scale operation, and if the only
-  // other operations are translations, sets |scale| to the scale component
-  // of these operations. Otherwise, returns false.
-  bool ScaleComponent(gfx::Vector3dF* scale) const;
-
   // For efficiency, we cache the decomposed transform.
   mutable scoped_ptr<gfx::DecomposedTransform> decomposed_transform_;
   mutable bool decomposed_transform_dirty_;