Update createImageData/getImageData/putImageData from float to long

third_party/WebKit/Source/modules/offscreencanvas2d/OffscreenCanvasRenderingContext2D.idl

Index: third_party/WebKit/Source/modules/offscreencanvas2d/OffscreenCanvasRenderingContext2D.idl
diff --git a/third_party/WebKit/Source/modules/offscreencanvas2d/OffscreenCanvasRenderingContext2D.idl b/third_party/WebKit/Source/modules/offscreencanvas2d/OffscreenCanvasRenderingContext2D.idl
index 7cf8c87123b8f17bc2f3ad1bf9d9c122dd9b116f..f1afd438b4bb87ab86c42ad163773dfbb94fdcba 100644
--- a/third_party/WebKit/Source/modules/offscreencanvas2d/OffscreenCanvasRenderingContext2D.idl
+++ b/third_party/WebKit/Source/modules/offscreencanvas2d/OffscreenCanvasRenderingContext2D.idl
@@ -72,10 +72,10 @@
 
     // pixel manipulation
     [RaisesException] ImageData createImageData(ImageData imagedata);
-    [RaisesException] ImageData createImageData(double sw, double sh);
-    [RaisesException] ImageData getImageData(double sx, double sy, double sw, double sh);
-    [RaisesException] void putImageData(ImageData imagedata, double dx, double dy);
-    [RaisesException] void putImageData(ImageData imagedata, double dx, double dy, double dirtyX, double dirtyY, double dirtyWidth, double dirtyHeight);
+    [RaisesException] ImageData createImageData(long sw, long sh);
+    [RaisesException] ImageData getImageData(long sx, long sy, long sw, long sh);
+    [RaisesException] void putImageData(ImageData imagedata, long dx, long dy);
+    [RaisesException] void putImageData(ImageData imagedata, long dx, long dy, long dirtyX, long dirtyY, long dirtyWidth, long dirtyHeight);
 
     // Line caps/joins
     attribute unrestricted double lineWidth; // (default 1)