Warn user in case extension delays network traffic too much.

chrome/browser/extensions/extension_service_unittest.cc

Index: chrome/browser/extensions/extension_service_unittest.cc
diff --git a/chrome/browser/extensions/extension_service_unittest.cc b/chrome/browser/extensions/extension_service_unittest.cc
index 51931de926d57837682c693df4ad2ab4a4985f9b..a2d6fc4277c3ea5b73ac5f97b437e98177f51ef2 100644
--- a/chrome/browser/extensions/extension_service_unittest.cc
+++ b/chrome/browser/extensions/extension_service_unittest.cc
@@ -2699,6 +2699,42 @@ TEST_F(ExtensionServiceTest, UninstallExtensionHelperTerminated) {
   UninstallExtension(good_crx, true);
 }
 
+TEST_F(ExtensionServiceTest, TestExtensionWarnings) {
+  InitializeEmptyExtensionService();
+  EXPECT_EQ(0u, service_->GetWarnings().size());
+
+  // Simple extension that should install without error.
+  FilePath path = data_dir_.AppendASCII("good.crx");
+  InstallCrx(path, true);
+  const char* extension_id = good_crx;
+  std::set<std::string> extension_id_set;
+  extension_id_set.insert(extension_id);
+
+  ExtensionServiceWarning warning(
+      ExtensionServiceWarning::kExcessiveNetworkDelay, extension_id_set);
+  EXPECT_TRUE(warning.AffectsExtension(good_crx));
+  EXPECT_FALSE(warning.AffectsExtension("foobar"));
+  EXPECT_EQ(ExtensionServiceWarning::kExcessiveNetworkDelay,
+            warning.warning_type());
+
+  // Install warning.
+  service_->SetWarning(warning);
+  EXPECT_EQ(1u, service_->GetWarnings().size());
+  EXPECT_TRUE(
+      service_->HasWarning(ExtensionServiceWarning::kExcessiveNetworkDelay));
+
+  // Clear warning and check that is is gone.
+  service_->ClearWarning(ExtensionServiceWarning::kExcessiveNetworkDelay);
+  EXPECT_EQ(0u, service_->GetWarnings().size());
+  EXPECT_FALSE(
+      service_->HasWarning(ExtensionServiceWarning::kExcessiveNetworkDelay));
+
+  // Install warning and disable extension. Check that the warning is gone.
+  service_->SetWarning(warning);
+  service_->DisableExtension(extension_id);
+  EXPECT_EQ(0u, service_->GetWarnings().size());
+}
+
 class ExtensionCookieCallback {
  public:
   ExtensionCookieCallback()