Trim leading and trailing whitespace from stored CSP headers.

third_party/WebKit/Source/core/frame/csp/CSPDirectiveListTest.cpp

Index: third_party/WebKit/Source/core/frame/csp/CSPDirectiveListTest.cpp
diff --git a/third_party/WebKit/Source/core/frame/csp/CSPDirectiveListTest.cpp b/third_party/WebKit/Source/core/frame/csp/CSPDirectiveListTest.cpp
index 62361d795bfa96444fcac53ef758cf07e52ef014..de8284a448854ce4752017c0c94d2a82dc07ae30 100644
--- a/third_party/WebKit/Source/core/frame/csp/CSPDirectiveListTest.cpp
+++ b/third_party/WebKit/Source/core/frame/csp/CSPDirectiveListTest.cpp
@@ -33,6 +33,25 @@ class CSPDirectiveListTest : public ::testing::Test {
   Persistent<ContentSecurityPolicy> csp;
 };
 
+TEST_F(CSPDirectiveListTest, Header) {
+  struct TestCase {
+    const char* list;
+    const char* expected;
+  } cases[] = {{"script-src 'self'", "script-src 'self'"},
+               {"  script-src 'self'  ", "script-src 'self'"},
+               {"\t\tscript-src 'self'", "script-src 'self'"},
+               {"script-src 'self' \t", "script-src 'self'"}};
+
+  for (const auto& test : cases) {
+    Member<CSPDirectiveList> directiveList =
+        createList(test.list, ContentSecurityPolicyHeaderTypeReport);
+    EXPECT_EQ(test.expected, directiveList->header());
+    directiveList =
+        createList(test.list, ContentSecurityPolicyHeaderTypeEnforce);
+    EXPECT_EQ(test.expected, directiveList->header());
+  }
+}
+
 TEST_F(CSPDirectiveListTest, IsMatchingNoncePresent) {
   struct TestCase {
     const char* list;