Move <webview> API to chrome layer

chrome/renderer/chrome_content_renderer_client.cc

Index: chrome/renderer/chrome_content_renderer_client.cc
diff --git a/chrome/renderer/chrome_content_renderer_client.cc b/chrome/renderer/chrome_content_renderer_client.cc
index a867b39c6da17c5752a9e1fe99b0522251480c2e..fabf53bf3393238d2c07d4d5a91cd253ec00ca75 100644
--- a/chrome/renderer/chrome_content_renderer_client.cc
+++ b/chrome/renderer/chrome_content_renderer_client.cc
@@ -37,6 +37,7 @@
 #include "chrome/renderer/autofill/password_autofill_manager.h"
 #include "chrome/renderer/autofill/password_generation_manager.h"
 #include "chrome/renderer/benchmarking_extension.h"
+#include "chrome/renderer/browser_plugin/chrome_browser_plugin_observer.h"
 #include "chrome/renderer/chrome_render_process_observer.h"
 #include "chrome/renderer/chrome_render_view_observer.h"
 #include "chrome/renderer/content_settings_observer.h"
@@ -362,6 +363,11 @@ SkBitmap* ChromeContentRendererClient::GetSadWebViewBitmap() {
       GetImageNamed(IDR_SAD_WEBVIEW).ToSkBitmap());
 }
 
+void ChromeContentRendererClient::BrowserPluginCreated(
+    content::BrowserPlugin* browser_plugin) {
+  new ChromeBrowserPluginObserver(browser_plugin);
+}
+
 std::string ChromeContentRendererClient::GetDefaultEncoding() {
   return l10n_util::GetStringUTF8(IDS_DEFAULT_ENCODING);
 }