Fixed memory overflow caused by invalid input.

printing/page_range_unittest.cc

Index: printing/page_range_unittest.cc
diff --git a/printing/page_range_unittest.cc b/printing/page_range_unittest.cc
index 7b0f5779fc249a33c3d93a3e990dd0d3c21f4b16..5370e97185582d042bb6514bf5dc5590954c3a7b 100644
--- a/printing/page_range_unittest.cc
+++ b/printing/page_range_unittest.cc
@@ -32,5 +32,15 @@ TEST(PageRangeTest, RangeMerge) {
 TEST(PageRangeTest, Empty) {
   printing::PageRanges ranges;
   std::vector<int> pages(printing::PageRange::GetPages(ranges));
-  EXPECT_EQ(0U, pages.size());
+  EXPECT_TRUE(pages.empty());
+}
+
+TEST(PageRangeTest, Huge) {
+  printing::PageRanges ranges;
+  printing::PageRange range;
+  range.from = 1;
+  range.to = 2000000000;
+  ranges.push_back(range);
+  std::vector<int> pages(printing::PageRange::GetPages(ranges));
+  EXPECT_FALSE(pages.empty());
 }