Fix gradient drawing on the Mac. (Base coordinate system != window base coord...

chrome/browser/cocoa/background_gradient_view.mm

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/cocoa/background_gradient_view.h"
 
 #define kToolbarTopOffset 12
 #define kToolbarMaxHeight 128
 
 @implementation BackgroundGradientView
@@ skipping 34 matching lines @@
     NSPoint phase = [self patternPhase];
     [[NSGraphicsContext currentContext] setPatternPhase:phase];
 
     NSColor *color = [NSColor colorWithPatternImage:backgroundImage];
     [color set];
     NSRectFill([self bounds]);
   } else {
     CGFloat winHeight = NSHeight([[self window] frame]);
     NSGradient *gradient = [theme gradientForStyle:GTMThemeStyleToolBar
                                              state:isKey];
-    NSPoint startPoint = [self convertPointFromBase:
-                          NSMakePoint(0, winHeight - kToolbarTopOffset)];
-    NSPoint endPoint = [self convertPointFromBase:
-        NSMakePoint(0, winHeight - kToolbarTopOffset - kToolbarMaxHeight)];
+    NSPoint startPoint =
+        [self convertPoint:NSMakePoint(0, winHeight - kToolbarTopOffset)
+                  fromView:nil];
+    NSPoint endPoint =
+        [self convertPoint:NSMakePoint(0, winHeight -
+                                            kToolbarTopOffset -
+                                            kToolbarMaxHeight)
+                  fromView:nil];
 
     [gradient drawFromPoint:startPoint
                     toPoint:endPoint
                     options:NSGradientDrawsBeforeStartingLocation |
                             NSGradientDrawsAfterEndingLocation];
   }
 
   if (showsDivider_) {
     // Draw bottom stroke
     [[self strokeColor] set];
     NSRect borderRect, contentRect;
     NSDivideRect([self bounds], &borderRect, &contentRect, 1, NSMinYEdge);
     NSRectFillUsingOperation(borderRect, NSCompositeSourceOver);
   }
 }
 
 - (NSColor*)strokeColor {
   return [[self gtm_theme] strokeColorForStyle:GTMThemeStyleToolBar
                                          state:[[self window] isKeyWindow]];
 }
 
 @end