mac: Remove IsOSLion().

chrome/browser/ui/cocoa/gradient_button_cell.mm

Index: chrome/browser/ui/cocoa/gradient_button_cell.mm
diff --git a/chrome/browser/ui/cocoa/gradient_button_cell.mm b/chrome/browser/ui/cocoa/gradient_button_cell.mm
index d5bc52f4a4aef039fc6b5981a1dc61805106d285..dacc16abd65d2645d0cf5613f25cc7e24f1a124a 100644
--- a/chrome/browser/ui/cocoa/gradient_button_cell.mm
+++ b/chrome/browser/ui/cocoa/gradient_button_cell.mm
@@ -528,21 +528,11 @@ static const NSTimeInterval kAnimationContinuousCycleDuration = 0.4;
   const ui::ThemeProvider* themeProvider = [window themeProvider];
   BOOL active = [window isKeyWindow] || [window isMainWindow];
 
-  // Draw custom focus ring only if AppKit won't draw one automatically.
-  // The new focus ring APIs became available with 10.7, but did not get
-  // applied to buttons (only editable text fields) until 10.8.
-  BOOL shouldDrawFocusRing = base::mac::IsOSLionOrEarlier() &&
-                             [self showsFirstResponder];
-
   // Stroke the borders and appropriate fill gradient. If we're borderless, the
   // only time we want to draw the inner gradient is if we're highlighted or if
   // we're drawing the focus ring manually.
   if (([self isBordered] && ![self showsBorderOnlyWhileMouseInside]) ||
-      pressed ||
-      [self isMouseInside] ||
-      [self isContinuousPulsing] ||
-      shouldDrawFocusRing) {
-
+      pressed || [self isMouseInside] || [self isContinuousPulsing]) {
     // When pulsing we want the bookmark to stand out a little more.
     BOOL showClickedGradient = pressed ||
         (pulseState_ == gradient_button_cell::kPulsingContinuous);
@@ -574,22 +564,6 @@ static const NSTimeInterval kAnimationContinuousCycleDuration = 0.4;
                              NSCompositeSourceOver);
   }
   [self drawInteriorWithFrame:innerFrame inView:controlView];
-
-  if (shouldDrawFocusRing) {
-    gfx::ScopedNSGraphicsContextSaveGState scoped_state;
-    const CGFloat lineWidth = [controlView cr_lineWidth];
-    // insetX = 1.0 is used for the drawing of blue highlight so that this
-    // highlight won't be too near the bookmark toolbar itself, in case we
-    // draw bookmark buttons in bookmark toolbar.
-    rect_path_utils::FrameRectWithInset(rect_path_utils::RoundedCornerAll,
-                                        NSInsetRect(cellFrame, 0, lineWidth),
-                                        1.0,            // insetX
-                                        0.0,            // insetY
-                                        3.0,            // outerRadius
-                                        lineWidth * 2,  // lineWidth
-                                        [controlView
-                                            cr_keyboardFocusIndicatorColor]);
-  }
 }
 
 - (void)drawInteriorWithFrame:(NSRect)cellFrame inView:(NSView*)controlView {