mac, yosemite: Resize button causes fullscreen effect.

chrome/browser/ui/cocoa/framed_browser_window.mm

Index: chrome/browser/ui/cocoa/framed_browser_window.mm
diff --git a/chrome/browser/ui/cocoa/framed_browser_window.mm b/chrome/browser/ui/cocoa/framed_browser_window.mm
index 0989b6a543f296e73e36b5b2484fd6ef7cd14ef1..6f8ff0691ccccd8b5e682873cb562e881b0ccdef 100644
--- a/chrome/browser/ui/cocoa/framed_browser_window.mm
+++ b/chrome/browser/ui/cocoa/framed_browser_window.mm
@@ -5,6 +5,7 @@
 #import "chrome/browser/ui/cocoa/framed_browser_window.h"
 
 #include "base/logging.h"
+#include "base/mac/scoped_nsobject.h"
 #include "base/mac/sdk_forward_declarations.h"
 #include "chrome/browser/global_keyboard_shortcuts_mac.h"
 #include "chrome/browser/profiles/profile_avatar_icon_util.h"
@@ -72,6 +73,15 @@ const CGFloat kWindowGradientHeight = 24.0;
                                styleMask:styleMask
                                  backing:NSBackingStoreBuffered
                                    defer:YES])) {
+    // In Yosemite, no views can be in front of the traffic lights controls in
+    // the top left of the window. This affects both the content view and the
+    // tab strip view.  The tab strip is added directly above the content view,
+    // so moving the content view to the back fixes the problem.
+    base::scoped_nsobject<NSView> contentView([[self contentView] retain]);
+    NSView* superview = [contentView superview];
+    [contentView removeFromSuperview];
+    [superview addSubview:contentView positioned:NSWindowBelow relativeTo:nil];
+
     // The 10.6 fullscreen code copies the title to a different window, which
     // will assert if it's nil.
     [self setTitle:@""];