DevTools: Initial commit with docked devtools window support on Linux.

chrome/browser/gtk/browser_window_gtk.h

Index: chrome/browser/gtk/browser_window_gtk.h
===================================================================
--- chrome/browser/gtk/browser_window_gtk.h	(revision 20859)
+++ chrome/browser/gtk/browser_window_gtk.h	(working copy)
@@ -119,6 +119,8 @@
   // Accessor for the tab strip.
   TabStripGtk* tabstrip() const { return tabstrip_.get(); }
 
+  void UpdateDevToolsForContents(TabContents* contents);
+
   void UpdateUIForContents(TabContents* contents);
 
   void OnBoundsChanged(const gfx::Rect& bounds);
@@ -284,6 +286,13 @@
   // of the content area).
   scoped_ptr<TabContentsContainerGtk> contents_container_;
 
+  // A container that manages the GtkWidget*s of developer tools for the
+  // selected tab contents.
+  scoped_ptr<TabContentsContainerGtk> devtools_container_;
+
+  // Split pane containing the contents_container_ and the devtools_container_.
+  GtkWidget* contents_split_;
+
   // The tab strip.  Always non-NULL.
   scoped_ptr<TabStripGtk> tabstrip_;