Clean up TCW, make it solely a hub for 1:1 observer/helper objects.

chrome/browser/ui/cocoa/find_bar/find_bar_cocoa_controller.mm

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/mac/mac_util.h"
 #include "base/sys_string_conversions.h"
 #include "chrome/browser/ui/cocoa/browser_window_controller.h"
 #import "chrome/browser/ui/cocoa/find_bar/find_bar_cocoa_controller.h"
@@ skipping 215 matching lines @@
     NSEvent* event = [NSApp currentEvent];
     if ([event type] != NSKeyDown && [event type] != NSKeyUp)
       return NO;
 
     // Forward the event to the renderer.
     // TODO(rohitrao): Should this call -[BaseView keyEvent:]?  Is there code in
     // that function that we want to keep or avoid? Calling
     // |ForwardKeyboardEvent()| directly ignores edit commands, which breaks
     // cmd-up/down if we ever decide to include |moveToBeginningOfDocument:| in
     // the list above.
-    RenderViewHost* render_view_host = contents->render_view_host();
+    RenderViewHost* render_view_host =
+        contents->tab_contents()->render_view_host();
     render_view_host->ForwardKeyboardEvent(NativeWebKeyboardEvent(event));
     return YES;
   }
 
   return NO;
 }
 
 // Methods from FindBar
 - (void)showFindBar:(BOOL)animate {
   // Save the currently-focused view.  |findBarView_| is in the view
@@ skipping 212 matching lines @@
   gfx::Rect view_rect(NSRectToCGRect(frame));
 
   if (!findBarBridge_ || !findBarBridge_->GetFindBarController())
     return frame.origin.x;
   TabContentsWrapper* contents =
       findBarBridge_->GetFindBarController()->tab_contents();
   if (!contents)
     return frame.origin.x;
 
   // Get the size of the container.
-  gfx::Rect container_rect(contents->view()->GetContainerSize());
+  gfx::Rect container_rect(
+      contents->tab_contents()->view()->GetContainerSize());
 
   // Position the FindBar on the top right corner.
   view_rect.set_x(
       container_rect.width() - view_rect.width() - kRightEdgeOffset);
   // Convert from Cocoa coordinates (Y growing up) to Y growing down.
   // Notice that the view frame's Y offset is relative to the whole window,
   // while GetLocationForFindbarView() expects it relative to the
   // content's boundaries. |maxY_| has the correct placement in Cocoa coords,
   // so we just have to invert the Y coordinate.
   view_rect.set_y(maxY_ - view_rect.bottom());
@@ skipping 50 matching lines @@
     }
   }
 
   // Has to happen after |ClearResults()| above.
   BOOL buttonsEnabled = [text length] > 0 ? YES : NO;
   [previousButton_ setEnabled:buttonsEnabled];
   [nextButton_ setEnabled:buttonsEnabled];
 }
 
 @end