Remove unused TransformOperation::isIdentity

Review URL: https://codereview.chromium.org/551183003

git-svn-id: svn://svn.chromium.org/blink/trunk@181613 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/platform/transforms/IdentityTransformOperation.h

@@ -42,7 +42,6 @@ public:
     }
 
 private:
-    virtual bool isIdentity() const OVERRIDE FINAL { return true; }
     virtual OperationType type() const OVERRIDE { return Identity; }
 
     virtual bool operator==(const TransformOperation& o) const OVERRIDE

third_party/WebKit/Source/platform/transforms/InterpolatedTransformOperation.h

@@ -50,8 +50,6 @@ public:
     }
 
 private:
-    virtual bool isIdentity() const OVERRIDE { return false; }
-
     virtual OperationType type() const OVERRIDE { return Interpolated; }
 
     virtual bool operator==(const TransformOperation&) const OVERRIDE;

third_party/WebKit/Source/platform/transforms/Matrix3DTransformOperation.h

@@ -45,8 +45,6 @@ public:
     }
 
 private:
-    virtual bool isIdentity() const OVERRIDE { return m_matrix.isIdentity(); }
-
     virtual OperationType type() const OVERRIDE { return Matrix3D; }
 
     virtual bool operator==(const TransformOperation& o) const OVERRIDE

third_party/WebKit/Source/platform/transforms/MatrixTransformOperation.h

@@ -50,8 +50,6 @@ public:
     }
 
 private:
-    virtual bool isIdentity() const OVERRIDE { return m_a == 1 && !m_b && !m_c && m_d == 1 && !m_e && !m_f; }
-
     virtual OperationType type() const OVERRIDE { return Matrix; }
 
     virtual bool operator==(const TransformOperation& o) const OVERRIDE

third_party/WebKit/Source/platform/transforms/PerspectiveTransformOperation.h

@@ -45,7 +45,6 @@ public:
     }
 
 private:
-    virtual bool isIdentity() const OVERRIDE { return !m_p; }
     virtual OperationType type() const OVERRIDE { return Perspective; }
 
     virtual bool operator==(const TransformOperation& o) const OVERRIDE

third_party/WebKit/Source/platform/transforms/RotateTransformOperation.h

@@ -53,8 +53,6 @@ public:
     virtual OperationType type() const OVERRIDE { return m_type; }
 
 private:
-    virtual bool isIdentity() const OVERRIDE { return !m_angle; }
-
     virtual bool operator==(const TransformOperation& o) const OVERRIDE
     {
         if (!isSameType(o))

third_party/WebKit/Source/platform/transforms/ScaleTransformOperation.h

@@ -48,8 +48,6 @@ public:
     virtual bool canBlendWith(const TransformOperation& other) const;
 
 private:
-    virtual bool isIdentity() const OVERRIDE { return m_x == 1 &&  m_y == 1 &&  m_z == 1; }
-
     virtual OperationType type() const OVERRIDE { return m_type; }
 
     virtual bool operator==(const TransformOperation& o) const OVERRIDE

third_party/WebKit/Source/platform/transforms/SkewTransformOperation.h

@@ -41,7 +41,6 @@ public:
 
     virtual bool canBlendWith(const TransformOperation& other) const;
 private:
-    virtual bool isIdentity() const OVERRIDE { return !m_angleX && !m_angleY; }
     virtual OperationType type() const OVERRIDE { return m_type; }
 
     virtual bool operator==(const TransformOperation& o) const OVERRIDE

third_party/WebKit/Source/platform/transforms/TransformOperation.h

@@ -57,8 +57,6 @@ public:
     virtual bool operator==(const TransformOperation&) const = 0;
     bool operator!=(const TransformOperation& o) const { return !(*this == o); }
 
-    virtual bool isIdentity() const = 0;
-
     virtual void apply(TransformationMatrix&, const FloatSize& borderBoxSize) const = 0;
 
     virtual PassRefPtr<TransformOperation> blend(const TransformOperation* from, double progress, bool blendToIdentity = false) = 0;

third_party/WebKit/Source/platform/transforms/TranslateTransformOperation.h

@@ -53,8 +53,6 @@ public:
     double z() const { return m_z; }
 
 private:
-    virtual bool isIdentity() const OVERRIDE { return !floatValueForLength(m_x, 1) && !floatValueForLength(m_y, 1) && !m_z; }
-
     virtual OperationType type() const OVERRIDE { return m_type; }
 
     virtual bool operator==(const TransformOperation& o) const OVERRIDE