Handle resize corner layout entirely in the platform BrowserWindow*/BrowserView* code...

chrome/browser/cocoa/tab_strip_controller.mm

Index: chrome/browser/cocoa/tab_strip_controller.mm
===================================================================
--- chrome/browser/cocoa/tab_strip_controller.mm	(revision 65756)
+++ chrome/browser/cocoa/tab_strip_controller.mm	(working copy)
@@ -469,7 +469,7 @@
   // New content is in place, delegate should adjust itself accordingly.
   [delegate_ onSelectTabWithContents:[controller tabContents]];
 
-  // It also resores content autoresizing properties.
+  // It also restores content autoresizing properties.
   [controller ensureContentsVisible];
 
   // Make sure the new tabs's sheets are visible (necessary when a background
@@ -973,7 +973,7 @@
   // Make a new tab. Load the contents of this tab from the nib and associate
   // the new controller with |contents| so it can be looked up later.
   scoped_nsobject<TabContentsController> contentsController(
-      [[TabContentsController alloc] initWithContents:contents]);
+      [[TabContentsController alloc] initWithContents:contents delegate:self]);
   [tabContentsArray_ insertObject:contentsController atIndex:index];
 
   // Make a new tab and add it to the strip. Keep track of its controller.
@@ -1080,7 +1080,8 @@
   // into the array, replacing |oldContents|.  A TabSelectedAt notification will
   // follow, at which point we will install the new view.
   scoped_nsobject<TabContentsController> newController(
-      [[TabContentsController alloc] initWithContents:newContents]);
+      [[TabContentsController alloc] initWithContents:newContents
+                                             delegate:self]);
 
   // Bye bye, |oldController|.
   [tabContentsArray_ replaceObjectAtIndex:index withObject:newController];
@@ -1787,6 +1788,14 @@
   sheetController_.reset();
 }
 
+// TabContentsControllerDelegate protocol.
+- (void)tabContentsViewFrameWillChange:(TabContentsController*)source
+                             frameRect:(NSRect)frameRect {
+  id<TabContentsControllerDelegate> controller =
+      [[switchView_ window] windowController];
+  [controller tabContentsViewFrameWillChange:source frameRect:frameRect];
+}
+
 - (TabContentsController*)activeTabContentsController {
   int modelIndex = tabStripModel_->selected_index();
   if (modelIndex < 0)