First cut at infobars on Mac. These are not expected to be...

chrome/chrome.gyp

Index: chrome/chrome.gyp
===================================================================
--- chrome/chrome.gyp	(revision 20925)
+++ chrome/chrome.gyp	(working copy)
@@ -802,6 +802,14 @@
         'browser/cocoa/gradient_button_cell.mm',
         'browser/cocoa/hung_renderer_controller.h',
         'browser/cocoa/hung_renderer_controller.mm',
+        'browser/cocoa/infobar.h',
+        'browser/cocoa/infobar_container_controller.h',
+        'browser/cocoa/infobar_container_controller.mm',
+        'browser/cocoa/infobar_controller.h',
+        'browser/cocoa/infobar_controller.mm',
+        'browser/cocoa/infobar_test_helper.h',
+        'browser/cocoa/infobar_text_field.h',
+        'browser/cocoa/infobar_text_field.mm',
         'browser/cocoa/location_bar_view_mac.h',
         'browser/cocoa/location_bar_view_mac.mm',
         'browser/cocoa/menu_localizer.h',
@@ -2578,6 +2586,8 @@
         'app/nibs/en.lproj/FindBar.xib',
         'app/nibs/en.lproj/FirstRunDialog.xib',
         'app/nibs/en.lproj/HungRendererDialog.xib',
+        'app/nibs/en.lproj/InfoBar.xib',
+        'app/nibs/en.lproj/InfoBarContainer.xib',
         'app/nibs/en.lproj/MainMenu.xib',
         'app/nibs/en.lproj/PageInfo.xib',
         'app/nibs/en.lproj/Preferences.xib',
@@ -3608,6 +3618,9 @@
         'browser/cocoa/find_bar_view_unittest.mm',
         'browser/cocoa/fullscreen_window_unittest.mm',
         'browser/cocoa/hung_renderer_controller_unittest.mm',
+        'browser/cocoa/infobar_container_controller_unittest.mm',
+        'browser/cocoa/infobar_controller_unittest.mm',
+        'browser/cocoa/infobar_text_field_unittest.mm',
         'browser/cocoa/location_bar_view_mac_unittest.mm',
         'browser/cocoa/gradient_button_cell_unittest.mm',
         'browser/cocoa/nsimage_cache_unittest.mm',