Mac: clang build

chrome/browser/cocoa/extensions/browser_action_button.mm

Index: chrome/browser/cocoa/extensions/browser_action_button.mm
diff --git a/chrome/browser/cocoa/extensions/browser_action_button.mm b/chrome/browser/cocoa/extensions/browser_action_button.mm
index a5a2aceb5cfe4350892628c5bd4f9931a37d6af4..fa7ef15a6093349a50e6ebb953e120586cb9c20a 100644
--- a/chrome/browser/cocoa/extensions/browser_action_button.mm
+++ b/chrome/browser/cocoa/extensions/browser_action_button.mm
@@ -25,12 +25,12 @@
 #include "skia/ext/skia_utils_mac.h"
 #import "third_party/GTM/AppKit/GTMNSAnimation+Duration.h"
 
-extern const NSString* kBrowserActionButtonUpdatedNotification =
+NSString* kBrowserActionButtonUpdatedNotification =
     @"BrowserActionButtonUpdatedNotification";
 
-extern const NSString* kBrowserActionButtonDraggingNotification =
+NSString* kBrowserActionButtonDraggingNotification =
     @"BrowserActionButtonDraggingNotification";
-extern const NSString* kBrowserActionButtonDragEndNotification =
+NSString* kBrowserActionButtonDragEndNotification =
     @"BrowserActionButtonDragEndNotification";
 
 static const CGFloat kBrowserActionBadgeOriginYOffset = 5;
@@ -42,7 +42,7 @@ static const CGFloat kBrowserActionOriginYOffset = 5;
 
 // The size of each button on the toolbar.
 static const CGFloat kBrowserActionHeight = 27;
-extern const CGFloat kBrowserActionWidth = 29;
+const CGFloat kBrowserActionWidth = 29;
 
 namespace {
 const CGFloat kAnimationDuration = 0.2;
@@ -181,8 +181,6 @@ class ExtensionImageTrackerBridge : public NotificationObserver,
     [[self superview] addSubview:self positioned:NSWindowAbove relativeTo:nil];
   }
   isBeingDragged_ = YES;
-  NSPoint location = [self convertPoint:[theEvent locationInWindow]
-                               fromView:nil];
   NSRect buttonFrame = [self frame];
   // TODO(andybons): Constrain the buttons to be within the container.
   // Clamp the button to be within its superview along the X-axis.