Credential Manager: Migrate to WebView client-based approach.

Source/web/WebViewImpl.cpp

Index: Source/web/WebViewImpl.cpp
diff --git a/Source/web/WebViewImpl.cpp b/Source/web/WebViewImpl.cpp
index 6093a9eb3e87402059d6dc759f12fb5ba494b355..953a0b5a5890a4e4473928e1538a96a110600c9c 100644
--- a/Source/web/WebViewImpl.cpp
+++ b/Source/web/WebViewImpl.cpp
@@ -84,6 +84,7 @@
 #include "core/rendering/RenderWidget.h"
 #include "core/rendering/TextAutosizer.h"
 #include "core/rendering/compositing/RenderLayerCompositor.h"
+#include "modules/credentialmanager/CredentialManagerClient.h"
 #include "modules/device_orientation/DeviceOrientationInspectorAgent.h"
 #include "modules/encryptedmedia/MediaKeysController.h"
 #include "modules/filesystem/InspectorFileSystemAgent.h"
@@ -329,6 +330,12 @@ void WebViewImpl::setAutofillClient(WebAutofillClient* autofillClient)
     m_autofillClient = autofillClient;
 }
 
+void WebViewImpl::setCredentialManagerClient(WebCredentialManagerClient* webCredentialManagerClient)
+{
+    ASSERT(m_page);
+    provideCredentialManagerClientTo(*m_page, new CredentialManagerClient(webCredentialManagerClient));
+}
+
 void WebViewImpl::setDevToolsAgentClient(WebDevToolsAgentClient* devToolsClient)
 {
     if (devToolsClient)