Drop 'WebURLRequest::setTargetType' from various content/renderer files.

content/renderer/render_view_browsertest.cc

Index: content/renderer/render_view_browsertest.cc
diff --git a/content/renderer/render_view_browsertest.cc b/content/renderer/render_view_browsertest.cc
index 83e282fc118e398c9f107ff634a4709dc98d76b7..27c5608c94a0221496b2c8858f731e21d118e548 100644
--- a/content/renderer/render_view_browsertest.cc
+++ b/content/renderer/render_view_browsertest.cc
@@ -2324,7 +2324,7 @@ TEST_F(RenderViewImplTest, ServiceWorkerNetworkProviderSetup) {
   // See that subresource requests are also tagged with the provider's id.
   EXPECT_EQ(frame(), RenderFrameImpl::FromWebFrame(GetMainFrame()));
   blink::WebURLRequest request(GURL("http://foo.com"));
-  request.setTargetType(blink::WebURLRequest::TargetIsSubresource);
+  request.setRequestContext(blink::WebURLRequest::RequestContextSubresource);
   blink::WebURLResponse redirect_response;
   frame()->willSendRequest(GetMainFrame(), 0, request, redirect_response);
   extra_data = static_cast<RequestExtraData*>(request.extraData());