Fix plug-in identifier for Shockwave and add a unit test.

chrome/browser/plugin_finder_unittest.cc

Index: chrome/browser/plugin_finder_unittest.cc
diff --git a/chrome/browser/plugin_finder_unittest.cc b/chrome/browser/plugin_finder_unittest.cc
index 8a077694b3ab9c61c4cc5d82482d58031134a6f6..fede0227661b5eec96b036b4f97453e97d2742c5 100644
--- a/chrome/browser/plugin_finder_unittest.cc
+++ b/chrome/browser/plugin_finder_unittest.cc
@@ -6,8 +6,11 @@
 
 #include "base/values.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "webkit/plugins/npapi/plugin_list.h"
 
 using base::DictionaryValue;
+using webkit::npapi::PluginGroup;
+using webkit::npapi::PluginList;
 
 TEST(PluginFinderTest, JsonSyntax) {
   scoped_ptr<DictionaryValue> plugin_list(PluginFinder::LoadPluginList());
@@ -35,3 +38,18 @@ TEST(PluginFinderTest, JsonSyntax) {
     }
   }
 }
+
+TEST(PluginFinderTest, PluginGroups) {
+  PluginFinder plugin_finder;
+  PluginList* plugin_list = PluginList::Singleton();
+  const std::vector<PluginGroup*>& plugin_groups =
+      plugin_list->GetHardcodedPluginGroups();
+  for (std::vector<PluginGroup*>::const_iterator it = plugin_groups.begin();
+       it != plugin_groups.end(); ++it) {
+    if ((*it)->version_ranges().empty())
+      continue;
+    std::string identifier = (*it)->identifier();
+    EXPECT_TRUE(plugin_finder.FindPluginWithIdentifier(identifier)) <<
+        "Couldn't find PluginInstaller for '" << identifier << "'";
+  }
+}