Prepare browser tests for NoRendererCrashesAssertion.

This CL adds ScopedAllowRendererCrashes to browser tests that
(expectedly or unexpectedly) might trigger a renderer crash.

Right now a browser test might pass, even if a renderer process crashed
during the test execution.  After https://crrev.com/c/1650463 a renderer
crash will trigger an explicit test failure, but before this enforcement
can start, existing tests that experience renderer crashes (expectedly
or unexpectedly) need to declare this via ScopedAllowRendererCrashes.

This CL was uploaded by git cl split.

R=lfg@chromium.org

Bug: 972220
Change-Id: Ia48b122e05426652171a4bbe3f95fef603823f15
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1652379
Auto-Submit: Łukasz Anforowicz <lukasza@chromium.org>
Reviewed-by: Lucas Gadani <lfg@chromium.org>
Commit-Queue: Lucas Gadani <lfg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#668430}

extensions/browser/guest_view/web_view/web_view_apitest.cc

@@ -28,6 +28,7 @@
 #include "content/public/common/content_switches.h"
 #include "content/public/test/browser_test_utils.h"
 #include "content/public/test/hit_test_region_observer.h"
+#include "content/public/test/no_renderer_crashes_assertion.h"
 #include "content/public/test/test_renderer_host.h"
 #include "content/public/test/test_utils.h"
 #include "extensions/browser/api/extensions_api_client.h"
@@ -402,6 +403,7 @@ IN_PROC_BROWSER_TEST_F(WebViewAPITest, TestCustomElementCallbacksInaccessible) {
 }
 
 IN_PROC_BROWSER_TEST_F(WebViewAPITest, TestAssignSrcAfterCrash) {
+  content::ScopedAllowRendererCrashes scoped_allow_renderer_crashes;
   RunTest("testAssignSrcAfterCrash", "web_view/apitest");
 }
 
@@ -551,6 +553,7 @@ IN_PROC_BROWSER_TEST_F(WebViewAPITest,
 }
 
 IN_PROC_BROWSER_TEST_F(WebViewAPITest, TestEventName) {
+  content::ScopedAllowRendererCrashes scoped_allow_renderer_crashes;
   RunTest("testEventName", "web_view/apitest");
 }
 
@@ -716,6 +719,8 @@ IN_PROC_BROWSER_TEST_F(WebViewAPITest, TestReassignSrcAttribute) {
 }
 
 IN_PROC_BROWSER_TEST_F(WebViewAPITest, TestRemoveWebviewOnExit) {
+  content::ScopedAllowRendererCrashes scoped_allow_renderer_crashes;
+
   std::string app_location = "web_view/apitest";
   StartTestServer(app_location);
 
@@ -752,6 +757,7 @@ IN_PROC_BROWSER_TEST_F(WebViewAPITest, TestReload) {
 }
 
 IN_PROC_BROWSER_TEST_F(WebViewAPITest, TestReloadAfterTerminate) {
+  content::ScopedAllowRendererCrashes scoped_allow_renderer_crashes;
   RunTest("testReloadAfterTerminate", "web_view/apitest");
 }
 
@@ -774,6 +780,7 @@ IN_PROC_BROWSER_TEST_F(WebViewAPITest, MAYBE_TestResizeWebviewResizesContent) {
 }
 
 IN_PROC_BROWSER_TEST_F(WebViewAPITest, TestTerminateAfterExit) {
+  content::ScopedAllowRendererCrashes scoped_allow_renderer_crashes;
   RunTest("testTerminateAfterExit", "web_view/apitest");
 }