GeometryInterace: Add rotate methods.

third_party/WebKit/Source/core/dom/DOMMatrix.cpp

Index: third_party/WebKit/Source/core/dom/DOMMatrix.cpp
diff --git a/third_party/WebKit/Source/core/dom/DOMMatrix.cpp b/third_party/WebKit/Source/core/dom/DOMMatrix.cpp
index 46922eb1802a1e2124ae8cd5c68c416a4e8de863..ebb39392b44bc19755629c6fb220e6f68fc75027 100644
--- a/third_party/WebKit/Source/core/dom/DOMMatrix.cpp
+++ b/third_party/WebKit/Source/core/dom/DOMMatrix.cpp
@@ -106,4 +106,47 @@ DOMMatrix* DOMMatrix::scaleNonUniformSelf(double sx, double sy, double sz,
     return this;
 }
 
+DOMMatrix* DOMMatrix::rotateSelf(double rotX)
+{
+    return rotateSelf(0, 0, rotX);
+}
+
+DOMMatrix* DOMMatrix::rotateSelf(double rotX, double rotY)
+{
+    return rotateSelf(rotX, rotY, 0);
+}
+
+DOMMatrix* DOMMatrix::rotateSelf(double rotX, double rotY, double rotZ)
+{
+    if (rotZ)
+        m_matrix->rotate3d(0, 0, 1, rotZ);
+
+    if (rotY) {
+        m_matrix->rotate3d(0, 1, 0, rotY);
+        m_is2D = false;
+    }
+
+    if (rotX) {
+        m_matrix->rotate3d(1, 0, 0, rotX);
+        m_is2D = false;
+    }
+
+    return this;
+}
+
+DOMMatrix* DOMMatrix::rotateFromVectorSelf(double x, double y)
+{
+    m_matrix->rotate(rad2deg(atan2(y, x)));
+    return this;
+}
+
+DOMMatrix* DOMMatrix::rotateAxisAngleSelf(double x, double y, double z, double angle)
+{
+    if (x || y)
+        m_is2D = false;
+
+    m_matrix->rotate3d(x, y, z, angle);
+    return this;
+}
+
 } // namespace blink