Prepare chrome/ for compilation with OS X 10.7 deployment target.

chrome/browser/ui/cocoa/extensions/extension_message_bubble_browsertest_mac.mm

Index: chrome/browser/ui/cocoa/extensions/extension_message_bubble_browsertest_mac.mm
diff --git a/chrome/browser/ui/cocoa/extensions/extension_message_bubble_browsertest_mac.mm b/chrome/browser/ui/cocoa/extensions/extension_message_bubble_browsertest_mac.mm
index 66ff65cba7a79a8f44de8844467ea767d8d3d906..f5997715f8940ade82f144de9c2385595e09fc8a 100644
--- a/chrome/browser/ui/cocoa/extensions/extension_message_bubble_browsertest_mac.mm
+++ b/chrome/browser/ui/cocoa/extensions/extension_message_bubble_browsertest_mac.mm
@@ -10,6 +10,7 @@
 #import "chrome/browser/ui/cocoa/extensions/toolbar_actions_bar_bubble_mac.h"
 #import "chrome/browser/ui/cocoa/toolbar/toolbar_controller.h"
 #include "chrome/browser/ui/extensions/extension_message_bubble_browsertest.h"
+#include "ui/base/cocoa/cocoa_base_utils.h"
 
 namespace {
 
@@ -39,9 +40,11 @@ void CheckBubbleAndReferenceView(ToolbarActionsBarBubbleMac* bubble,
   CGFloat refLowY = [expectedReferenceView isFlipped] ?
       NSMaxY(referenceFrame) : NSMinY(referenceFrame);
   NSPoint refLowerLeft = NSMakePoint(NSMinX(referenceFrame), refLowY);
-  NSPoint refLowerLeftInScreen = [window convertBaseToScreen:refLowerLeft];
+  NSPoint refLowerLeftInScreen =
+      ui::ConvertPointFromWindowToScreen(window, refLowerLeft);
   NSPoint refLowerRight = NSMakePoint(NSMaxX(referenceFrame), refLowY);
-  NSPoint refLowerRightInScreen = [window convertBaseToScreen:refLowerRight];
+  NSPoint refLowerRightInScreen =
+      ui::ConvertPointFromWindowToScreen(window, refLowerRight);
 
   // The bubble should be below the reference view, but not too far below.
   EXPECT_LE(NSMaxY(bubbleFrame), refLowerLeftInScreen.y);