extensions: Add ExtensionView interface.

chrome/browser/ui/cocoa/extensions/extension_view_mac.mm

Index: chrome/browser/ui/cocoa/extensions/extension_view_mac.mm
diff --git a/chrome/browser/ui/cocoa/extensions/extension_view_mac.mm b/chrome/browser/ui/cocoa/extensions/extension_view_mac.mm
index 642face2872681e82b47f115c9d81cb2dd81c263..760ef07be26685f8fc27e1ac61447509c5ed8dc6 100644
--- a/chrome/browser/ui/cocoa/extensions/extension_view_mac.mm
+++ b/chrome/browser/ui/cocoa/extensions/extension_view_mac.mm
@@ -43,10 +43,6 @@ content::RenderViewHost* ExtensionViewMac::render_view_host() const {
   return extension_host_->render_view_host();
 }
 
-void ExtensionViewMac::DidStopLoading() {
-  ShowIfCompletelyLoaded();
-}
-
 void ExtensionViewMac::SetBackground(const SkBitmap& background) {
   if (!pending_background_.empty() && render_view_host()->GetView()) {
     render_view_host()->GetView()->SetBackground(background);
@@ -56,6 +52,14 @@ void ExtensionViewMac::SetBackground(const SkBitmap& background) {
   ShowIfCompletelyLoaded();
 }
 
+Browser* ExtensionViewMac::GetBrowser() {
+  return browser_;
+}
+
+const Browser* ExtensionViewMac::GetBrowser() const {
+  return browser_;
+}
+
 void ExtensionViewMac::ResizeDueToAutoResize(const gfx::Size& new_size) {
   if (container_)
     container_->OnExtensionSizeChanged(this, new_size);
@@ -77,6 +81,10 @@ void ExtensionViewMac::RenderViewCreated() {
   }
 }
 
+void ExtensionViewMac::DidStopLoading() {
+  ShowIfCompletelyLoaded();
+}
+
 void ExtensionViewMac::WindowFrameChanged() {
   if (render_view_host()->GetView())
     render_view_host()->GetView()->WindowFrameChanged();
@@ -95,3 +103,11 @@ void ExtensionViewMac::ShowIfCompletelyLoaded() {
       container_->OnExtensionViewDidShow(this);
   }
 }
+
+// static
+ExtensionView* ExtensionView::Create(extensions::ExtensionHost* host,
+                                     Browser* browser) {
+  ExtensionViewMac* extension_view = new ExtensionViewMac(host, browser);
+  extension_view->Init();
+  return extension_view;
+}