Implement new page action API.

chrome/browser/extensions/browser_action_apitest.cc

Index: chrome/browser/extensions/browser_action_apitest.cc
diff --git a/chrome/browser/extensions/browser_action_apitest.cc b/chrome/browser/extensions/browser_action_apitest.cc
index 692e74e93f6aeffe22acdb3a0bd93da4aaadae0c..8690081ac45d0c4812b0810f09439dd343ba439e 100644
--- a/chrome/browser/extensions/browser_action_apitest.cc
+++ b/chrome/browser/extensions/browser_action_apitest.cc
@@ -36,7 +36,6 @@ IN_PROC_BROWSER_TEST_F(ExtensionApiTest, BrowserAction) {
   // Test that we received the changes.
   ExtensionActionState* action_state = extension->browser_action_state();
   ASSERT_EQ("Modified", action_state->title());
-  ASSERT_EQ(1, action_state->icon_index());
   ASSERT_EQ("badge", action_state->badge_text());
   ASSERT_EQ(SkColorSetARGB(255, 255, 255, 255),
             action_state->badge_background_color());