Linux: server side backing stores

This converts Linux to using server-side backing stores. Rather than
keeping a backing store in heap memory in the browser, we create a
pixmap in the X server. This means that expose messages don't require
us to transport any images to the X server, we can just direct it to
paint from the pixmap. Also, scrolling can be performed server side
also. This greatly improves performance over remote X.

Also, shared memory transport to the X server is implemented. Shared
memory segments can be created in the renderer and mapped directly
into the X server.

Review URL: http://codereview.chromium.org/27147


git-svn-id: svn://svn.chromium.org/chrome/trunk/src@10369 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 1 insertions, 0 deletions

diff --git a/chrome/browser/renderer_host/render_widget_host_view_mac.h b/chrome/browser/renderer_host/render_widget_host_view_mac.h
index 13d4fb6..54819e1 100644
--- a/chrome/browser/renderer_host/render_widget_host_view_mac.h
+++ b/chrome/browser/renderer_host/render_widget_host_view_mac.h
@@ -78,6 +78,7 @@ class RenderWidgetHostViewMac : public RenderWidgetHostView {
   virtual void RenderViewGone();
   virtual void Destroy();
   virtual void SetTooltipText(const std::wstring& tooltip_text);
+  virtual BackingStore* AllocBackingStore(const gfx::Size& size);
 
  private:
   // Shuts down the render_widget_host_.  This is a separate function so we can