| Index: third_party/WebKit/Source/core/page/PrintContext.cpp | 
| diff --git a/third_party/WebKit/Source/core/page/PrintContext.cpp b/third_party/WebKit/Source/core/page/PrintContext.cpp | 
| index 3bcbfa79f16b12541ca8f852d6d8331f6617c75d..1dc1f198989279bbdc5d206ee72ab951aeda8567 100644 | 
| --- a/third_party/WebKit/Source/core/page/PrintContext.cpp | 
| +++ b/third_party/WebKit/Source/core/page/PrintContext.cpp | 
| @@ -150,6 +150,9 @@ void PrintContext::computePageRectsWithPageSizeInternal(const FloatSize& pageSiz | 
|  | 
| void PrintContext::begin(float width, float height) | 
| { | 
| +    ASSERT(width > 0); | 
| +    ASSERT(height > 0); | 
| + | 
| // This function can be called multiple times to adjust printing parameters without going back to screen mode. | 
| m_isPrinting = true; | 
|  | 
|  |