Support cmd-left/right for history.

chrome/browser/cocoa/chrome_browser_window.h

Index: chrome/browser/cocoa/chrome_browser_window.h
diff --git a/chrome/browser/cocoa/chrome_browser_window.h b/chrome/browser/cocoa/chrome_browser_window.h
index fb14b28ae411d003b353aa6e42cffdd461a3acbd..9130616583cb69b0d834491f3a0b05eb7ab0dcbe 100644
--- a/chrome/browser/cocoa/chrome_browser_window.h
+++ b/chrome/browser/cocoa/chrome_browser_window.h
@@ -15,6 +15,16 @@
   BOOL shouldHideTitle_;
 }
 
+// See global_keyboard_shortcuts_mac.h for details on the next two functions.
+
+// Checks if |event| is a window keyboard shortcut. If so, dispatches it to the
+// window controller's |executeCommand:| and returns |YES|.
+- (BOOL)handleExtraWindowKeyboardShortcut:(NSEvent*)event;
+
+// Checks if |event| is a browser keyboard shortcut. If so, dispatches it to the
+// window controller's |executeCommand:| and returns |YES|.
+- (BOOL)handleExtraBrowserKeyboardShortcut:(NSEvent*)event;
+
 // Override, so we can handle global keyboard events.
 - (BOOL)performKeyEquivalent:(NSEvent*)theEvent;