Add autoresize capability to chromium.

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index c8d35b7ad626b7e5a8acc177c9059cb61547314c..e21da30df06ede2fc861131e1b05f9bf489b9b49 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -654,6 +654,7 @@ bool RenderViewImpl::OnMessageReceived(const IPC::Message& message) {
     IPC_MESSAGE_HANDLER(ViewMsg_SetBackground, OnSetBackground)
     IPC_MESSAGE_HANDLER(ViewMsg_EnablePreferredSizeChangedMode,
                         OnEnablePreferredSizeChangedMode)
+    IPC_MESSAGE_HANDLER(ViewMsg_EnableAutoResize, OnEnableAutoResize)
     IPC_MESSAGE_HANDLER(ViewMsg_DisableScrollbarsForSmallWindows,
                         OnDisableScrollbarsForSmallWindows)
     IPC_MESSAGE_HANDLER(ViewMsg_SetRendererPrefs, OnSetRendererPrefs)
@@ -3868,6 +3869,15 @@ void RenderViewImpl::OnFileChooserResponse(const std::vector<FilePath>& paths) {
   }
 }
 
+void RenderViewImpl::OnEnableAutoResize(const gfx::Size& min_size,
+                                        const gfx::Size& max_size) {
+  DCHECK(!send_preferred_size_changes_);
+  DCHECK(disable_scrollbars_size_limit_.IsEmpty());
+  if (!webview())
+    return;
+  webview()->enableAutoSizeMode(true, min_size, max_size);
+}
+
 void RenderViewImpl::OnEnablePreferredSizeChangedMode() {
   if (send_preferred_size_changes_)
     return;