Change all test cases to use WebViewBase instead of WebViewImpl.

third_party/WebKit/Source/web/WebViewImpl.cpp

Index: third_party/WebKit/Source/web/WebViewImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebViewImpl.cpp b/third_party/WebKit/Source/web/WebViewImpl.cpp
index 5ef14d05190b922becf27266fd8bed5ea65fc0c8..9781d6b7248862225d39e6483db4a59799511593 100644
--- a/third_party/WebKit/Source/web/WebViewImpl.cpp
+++ b/third_party/WebKit/Source/web/WebViewImpl.cpp
@@ -273,11 +273,10 @@ class ColorOverlay final : public PageOverlay::Delegate {
 
 WebView* WebView::Create(WebViewClient* client,
                          WebPageVisibilityState visibility_state) {
-  // Pass the WebViewImpl's self-reference to the caller.
   return WebViewImpl::Create(client, visibility_state);
 }
 
-WebViewImpl* WebViewImpl::Create(WebViewClient* client,
+WebViewBase* WebViewImpl::Create(WebViewClient* client,
                                  WebPageVisibilityState visibility_state) {
   // Pass the WebViewImpl's self-reference to the caller.
   return AdoptRef(new WebViewImpl(client, visibility_state)).LeakRef();
@@ -1774,8 +1773,8 @@ WebViewBase* WebViewBase::FromPage(Page* page) {
   return WebViewImpl::FromPage(page);
 }
 
-WebViewImpl* WebViewImpl::FromPage(Page* page) {
-  return page ? static_cast<WebViewImpl*>(page->GetChromeClient().WebView())
+WebViewBase* WebViewImpl::FromPage(Page* page) {
+  return page ? static_cast<WebViewBase*>(page->GetChromeClient().WebView())
               : nullptr;
 }