Change panels to be able to turn off autoresize.

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 3c4812913f5f8685caa2ebe652c588cc93a9713f..538e9b7a7ad2501c22653b1be9267b4e7b3998ad 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -780,6 +780,7 @@ bool RenderViewImpl::OnMessageReceived(const IPC::Message& message) {
     IPC_MESSAGE_HANDLER(ViewMsg_EnablePreferredSizeChangedMode,
                         OnEnablePreferredSizeChangedMode)
     IPC_MESSAGE_HANDLER(ViewMsg_EnableAutoResize, OnEnableAutoResize)
+    IPC_MESSAGE_HANDLER(ViewMsg_DisableAutoResize, OnDisableAutoResize)
     IPC_MESSAGE_HANDLER(ViewMsg_DisableScrollbarsForSmallWindows,
                         OnDisableScrollbarsForSmallWindows)
     IPC_MESSAGE_HANDLER(ViewMsg_SetRendererPrefs, OnSetRendererPrefs)
@@ -4156,7 +4157,17 @@ void RenderViewImpl::OnEnableAutoResize(const gfx::Size& min_size,
   DCHECK(disable_scrollbars_size_limit_.IsEmpty());
   if (!webview())
     return;
-  webview()->enableAutoResizeMode(true, min_size, max_size);
+  webview()->enableAutoResizeMode(min_size, max_size);
+}
+
+void RenderViewImpl::OnDisableAutoResize(const gfx::Size& new_size) {
+  DCHECK(disable_scrollbars_size_limit_.IsEmpty());
+  if (!webview())
+    return;
+  webview()->disableAutoResizeMode();
+
+  paint_aggregator_.ClearPendingUpdate();
+  webview()->resize(new_size);

[darin (slow to review), 2012/03/01 00:30:49]

do you need to assign to size_?  should some code be shared between this
function and OnResize?

[levin, 2012/03/01 01:56:19]

Good idea. Done.

(There was a problem with OnResize setting up the send ack bit but I addressed
that and added some asserts to verify that it is set when appropriate.)

 }
 
 void RenderViewImpl::OnEnablePreferredSizeChangedMode() {