add a new set of commands to resize and position windows

chrome/browser/ui/cocoa/browser_window_cocoa.mm

Index: chrome/browser/ui/cocoa/browser_window_cocoa.mm
diff --git a/chrome/browser/ui/cocoa/browser_window_cocoa.mm b/chrome/browser/ui/cocoa/browser_window_cocoa.mm
index 0f2bf1a6808bca8cd3318bb8b77167f90029ac62..93c2194ad348a07fd1fc2cfcff0d45f0fca3e5f8 100644
--- a/chrome/browser/ui/cocoa/browser_window_cocoa.mm
+++ b/chrome/browser/ui/cocoa/browser_window_cocoa.mm
@@ -7,6 +7,7 @@
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
+#include "base/mac/foundation_util.h"
 #import "base/mac/sdk_forward_declarations.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_util.h"
@@ -845,3 +846,15 @@ void BrowserWindowCocoa::ShowImeWarningBubble(
         callback) {
   NOTREACHED() << "The IME warning bubble is unsupported on this platform.";
 }
+
+// static
+BrowserWindow* BrowserWindow::GetBrowserWindowForNativeWindow(
+    gfx::NativeWindow window) {
+  id<NSWindowDelegate> window_delegate = [window delegate];
+  if ([window_delegate respondsToSelector:@selector(browserWindow)]) {
+    BrowserWindowController* controller =
+        base::mac::ObjCCastStrict<BrowserWindowController>(window_delegate);
+    return [controller browserWindow];
+  }
+  return nullptr;  // Not created by BrowserWindowCocoa.
+}