Support "always allow" for runtime script execution

extensions/common/url_pattern_unittest.cc

Index: extensions/common/url_pattern_unittest.cc
diff --git a/extensions/common/url_pattern_unittest.cc b/extensions/common/url_pattern_unittest.cc
index 9618aeb16a175be5c0fdced0f59274fe49d51ecd..fe5eb01e8866be648e234ae339ba6ac05fe2f192 100644
--- a/extensions/common/url_pattern_unittest.cc
+++ b/extensions/common/url_pattern_unittest.cc
@@ -810,4 +810,18 @@ TEST(ExtensionURLPatternTest, Subset) {
   EXPECT_TRUE(StrictlyContains(pattern12, pattern13));
 }
 
+TEST(ExtensionURLPatternTest, MatchesSingleOrigin) {
+  URLPattern pattern1(URLPattern::SCHEME_ALL);
+  URLPattern pattern2(URLPattern::SCHEME_ALL);
+  URLPattern pattern3(URLPattern::SCHEME_ALL);
+
+  EXPECT_EQ(URLPattern::PARSE_SUCCESS, pattern1.Parse("http://*/*"));
+  EXPECT_EQ(URLPattern::PARSE_SUCCESS, pattern2.Parse("http://*.google.com/*"));
+  EXPECT_EQ(URLPattern::PARSE_SUCCESS, pattern3.Parse("http://www.google.com/*"));
+
+  EXPECT_FALSE(pattern1.MatchesSingleOrigin());
+  EXPECT_FALSE(pattern2.MatchesSingleOrigin());
+  EXPECT_TRUE(pattern3.MatchesSingleOrigin());

[not at google - send to devlin, 2014/08/11 22:59:30]

I think it's unnecessarily complex to be making these in 3 stages. you can do it
all at once, since parsing should succeed:

EXPECT_FALSE(URLPattern(URLPattern::SCHEME_ALL, "http://*/*")
             .MatchesSingleOrigin());
EXPECT_FALSE(URLPattern(URLPattern::SCHEME_ALL, "http://*.google.com/*")
             .MatchesSingleOrigin());
...

also test wildcard scheme like *://google.com, wildcards like *.com, longer
paths, and paths that aren't * - assuming that last one parses, but it would
appear so:

https://code.google.com/p/chromium/codesearch#chromium/src/chrome/browser/ext...

[gpdavis, 2014/08/12 00:52:06]

Shouldn't MatchesSingleOrigin also check the scheme (and port)?  Because an
origin is a scheme, host, and port, correct?

[not at google - send to devlin, 2014/08/12 19:49:26]

Yes it should check the scheme and port.

+}
+
 }  // namespace