Enabling two tests that were disabled in app_shell_browsertests.

We can enable those tests now that crbug.com/419020 is fixed.

BUG=352293

Committed: https://crrev.com/9b10e4b077ee7106ab57d4728c5199a03638701a
Cr-Commit-Position: refs/heads/master@{#298062}

Review URL: https://codereview.chromium.org/623193002

Cr-Commit-Position: refs/heads/master@{#299177}

extensions/browser/guest_view/web_view/web_view_apitest.cc

@@ -314,10 +314,7 @@ IN_PROC_BROWSER_TEST_F(WebViewAPITest, TestDisplayNoneWebviewLoad) {
   RunTest("testDisplayNoneWebviewLoad", "web_view/apitest");
 }
 
-// TODO(lfg): Re-enable this test once the fix for webview leaking
-// RenderProcessHost has landed. See http://crbug.com/419020 .
-IN_PROC_BROWSER_TEST_F(WebViewAPITest,
-                       DISABLED_TestDisplayNoneWebviewRemoveChild) {
+IN_PROC_BROWSER_TEST_F(WebViewAPITest, TestDisplayNoneWebviewRemoveChild) {
   RunTest("testDisplayNoneWebviewRemoveChild", "web_view/apitest");
 }
 
@@ -507,10 +504,7 @@ IN_PROC_BROWSER_TEST_F(WebViewAPITest, TestRemoveSrcAttribute) {
   RunTest("testRemoveSrcAttribute", "web_view/apitest");
 }
 
-// TODO(lfg): Re-enable this test once the fix for webview leaking
-// RenderProcessHost has landed. See http://crbug.com/419020 .
-IN_PROC_BROWSER_TEST_F(WebViewAPITest,
-                       DISABLED_TestRemoveWebviewAfterNavigation) {
+IN_PROC_BROWSER_TEST_F(WebViewAPITest, TestRemoveWebviewAfterNavigation) {
   RunTest("testRemoveWebviewAfterNavigation", "web_view/apitest");
 }