Refactor GuestViewContainer to split out WebView related logic and MimeHandlerView related logic.

extensions/shell/renderer/shell_content_renderer_client.cc

Index: extensions/shell/renderer/shell_content_renderer_client.cc
diff --git a/extensions/shell/renderer/shell_content_renderer_client.cc b/extensions/shell/renderer/shell_content_renderer_client.cc
index 487731d93cad67a7b4f5321fe6fed172c311116a..8e3c19518a83f21a75cff04b7299b7900caf9a7e 100644
--- a/extensions/shell/renderer/shell_content_renderer_client.cc
+++ b/extensions/shell/renderer/shell_content_renderer_client.cc
@@ -12,7 +12,8 @@
 #include "extensions/renderer/default_dispatcher_delegate.h"
 #include "extensions/renderer/dispatcher.h"
 #include "extensions/renderer/extension_helper.h"
-#include "extensions/renderer/guest_view/guest_view_container.h"
+#include "extensions/renderer/guest_view/mime_handler_view_container.h"
+#include "extensions/renderer/guest_view/web_view_container.h"
 #include "extensions/shell/common/shell_extensions_client.h"
 #include "extensions/shell/renderer/shell_extensions_renderer_client.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
@@ -175,10 +176,16 @@ bool ShellContentRendererClient::ShouldEnableSiteIsolationPolicy() const {
 }
 
 content::BrowserPluginDelegate*
-ShellContentRendererClient::CreateBrowserPluginDelegate(
+ShellContentRendererClient::CreateWebViewContainer(
+    content::RenderFrame* render_frame) {
+  return new extensions::WebViewContainer(render_frame);
+}
+
+content::BrowserPluginDelegate*
+ShellContentRendererClient::CreateMimeHandlerViewContainer(
     content::RenderFrame* render_frame,
     const std::string& mime_type) {
-  return new extensions::GuestViewContainer(render_frame, mime_type);
+  return new extensions::MimeHandlerViewContainer(render_frame, mime_type);
 }
 
 }  // namespace extensions