Internals: throw an exception when page height or width is 0.

third_party/WebKit/Source/core/testing/Internals.cpp

Index: third_party/WebKit/Source/core/testing/Internals.cpp
diff --git a/third_party/WebKit/Source/core/testing/Internals.cpp b/third_party/WebKit/Source/core/testing/Internals.cpp
index fa9e10694eb5b6b4a97c70c45e3be9c870d0b68b..e790d9a3f1bd895213f6d1e52ce30f9d39b59689 100644
--- a/third_party/WebKit/Source/core/testing/Internals.cpp
+++ b/third_party/WebKit/Source/core/testing/Internals.cpp
@@ -1736,11 +1736,16 @@ String Internals::counterValue(Element* element)
     return counterValueForElement(element);
 }
 
-int Internals::pageNumber(Element* element, float pageWidth, float pageHeight)
+int Internals::pageNumber(Element* element, float pageWidth, float pageHeight, ExceptionState& exceptionState)
 {
     if (!element)
         return 0;
 
+    if (pageWidth <= 0 || pageHeight <= 0) {
+        exceptionState.throwDOMException(V8TypeError, "Page width and height must be larger than 0.");
+        return 0;
+    }
+
     return PrintContext::pageNumberForElement(element, FloatSize(pageWidth, pageHeight));
 }
 
@@ -1765,11 +1770,16 @@ Vector<String> Internals::allIconURLs(Document* document) const
     return iconURLs(document, Favicon | TouchIcon | TouchPrecomposedIcon);
 }
 
-int Internals::numberOfPages(float pageWidth, float pageHeight)
+int Internals::numberOfPages(float pageWidth, float pageHeight, ExceptionState& exceptionState)
 {
     if (!frame())
         return -1;
 
+    if (pageWidth <= 0 || pageHeight <= 0) {
+        exceptionState.throwDOMException(V8TypeError, "Page width and height must be larger than 0.");
+        return -1;
+    }
+
     return PrintContext::numberOfPages(frame(), FloatSize(pageWidth, pageHeight));
 }