Avoid duplication of calling getTransformedClipBounds in stroke APIs.

Source/core/html/canvas/CanvasRenderingContext2D.cpp

Index: Source/core/html/canvas/CanvasRenderingContext2D.cpp
diff --git a/Source/core/html/canvas/CanvasRenderingContext2D.cpp b/Source/core/html/canvas/CanvasRenderingContext2D.cpp
index 3529068fc8eb02e2a53845a328a82edda2395576..1e3d7f6fd759c609e7570bece7847488043cb0e4 100644
--- a/Source/core/html/canvas/CanvasRenderingContext2D.cpp
+++ b/Source/core/html/canvas/CanvasRenderingContext2D.cpp
@@ -1067,7 +1067,7 @@ void CanvasRenderingContext2D::strokeInternal(const Path& path)
         FloatRect bounds = path.boundingRect();
         inflateStrokeRect(bounds);
         FloatRect dirtyRect;
-        if (computeDirtyRect(bounds, &dirtyRect)) {
+        if (computeDirtyRect(bounds, clipBounds, &dirtyRect)) {
             c->strokePath(path);
             didDraw(dirtyRect);
         }
@@ -1335,7 +1335,7 @@ void CanvasRenderingContext2D::strokeRect(float x, float y, float width, float h
         FloatRect boundingRect = rect;
         boundingRect.inflate(state().m_lineWidth / 2);
         FloatRect dirtyRect;
-        if (computeDirtyRect(boundingRect, &dirtyRect)) {
+        if (computeDirtyRect(boundingRect, clipBounds, &dirtyRect)) {
             c->strokeRect(rect);
             didDraw(dirtyRect);
         }