Check for warnings when loading extensions in browser tests.

chrome/browser/extensions/extension_apitest.h

Index: chrome/browser/extensions/extension_apitest.h
diff --git a/chrome/browser/extensions/extension_apitest.h b/chrome/browser/extensions/extension_apitest.h
index 9d3277ac4313317723606dde79e21d8fd440e422..b5f7e3e3646227ed1cf32bbb6faba689ee673fc8 100644
--- a/chrome/browser/extensions/extension_apitest.h
+++ b/chrome/browser/extensions/extension_apitest.h
@@ -52,7 +52,11 @@ class ExtensionApiTest : public ExtensionBrowserTest {
     kFlagLoadAsComponent = 1 << 3,
 
     // Launch the extension as a platform app.
-    kFlagLaunchPlatformApp = 1 << 4
+    kFlagLaunchPlatformApp = 1 << 4,
+
+    // Don't fail when the loaded manifest has warnings (should only be used
+    // when testing deprecated features).
+    kFlagIgnoreManifestWarnings = 1 << 5
   };
 
   ExtensionApiTest();
@@ -109,6 +113,9 @@ class ExtensionApiTest : public ExtensionBrowserTest {
   // Same as RunExtensionTest, but enables the extension for incognito mode.
   bool RunExtensionTestIncognito(const char* extension_name);
 
+  // Same as RunExtensionTest, but ignores any warnings in the manifest.
+  bool RunExtensionTestIgnoreManifestWarnings(const char* extension_name);
+
   // Same as RunExtensionTest, but loads extension as component.
   bool RunComponentExtensionTest(const char* extension_name);