Fix processing of mouse events on MacViews.

ui/base/cocoa/base_view.mm

 // Copyright (c) 2011 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 "ui/base/cocoa/base_view.h"
 
 #include "base/mac/mac_util.h"
 
 NSString* kViewDidBecomeFirstResponder =
     @"Chromium.kViewDidBecomeFirstResponder";
@@ skipping 49 matching lines @@
   // http://crbug.com/176725 / http://openradar.appspot.com/radar?id=2773401 .
   // Work around it by reinstalling the tracking area after window resize.
   // This AppKit bug is fixed on Yosemite, so we only apply this workaround on
   // 10.9.
   if (base::mac::IsOS10_9()) {
     [self disableTracking];
     [self enableTracking];
   }
 }
 
+- (void)passMouseEventToSuperview:(NSEvent*)theEvent {
+  // NSView doesn't implement the generic mouseEvent:, so we have to send
+  // events using proper method.
+  switch ([theEvent type]) {
+    case NSLeftMouseDown:
+      [super mouseDown:theEvent];
+      break;
+    case NSLeftMouseUp:
+      [super mouseUp:theEvent];
+      break;
+    case NSRightMouseDown:
+      [super rightMouseDown:theEvent];
+      break;
+    case NSRightMouseUp:
+      [super rightMouseUp:theEvent];
+      break;
+    case NSOtherMouseDown:
+      [super otherMouseDown:theEvent];
+      break;
+    case NSOtherMouseUp:
+      [super otherMouseUp:theEvent];
+      break;
+    case NSMouseMoved:
+      [super mouseMoved:theEvent];
+      break;
+    case NSLeftMouseDragged:
+      [super mouseDragged:theEvent];
+      break;
+    case NSRightMouseDragged:
+      [super rightMouseDragged:theEvent];
+      break;
+    case NSOtherMouseDragged:
+      [super otherMouseDragged:theEvent];
+      break;
+    case NSMouseEntered:
+      [super mouseEntered:theEvent];
+      break;
+    case NSMouseExited:
+      [super mouseExited:theEvent];
+      break;
+    default:
+      NOTREACHED();
+      break;
+  }
+}
+
 - (void)mouseEvent:(NSEvent*)theEvent {
   // This method left intentionally blank.
 }
 
 - (EventHandled)keyEvent:(NSEvent*)theEvent {
   // The default implementation of this method does not handle any key events.
   // Derived classes should return kEventHandled if they handled an event,
   // otherwise it will be forwarded on to |super|.
   return kEventNotHandled;
 }
@@ skipping 114 matching lines @@
   return new_rect;
 }
 
 - (NSRect)flipRectToNSRect:(gfx::Rect)rect {
   NSRect new_rect(NSRectFromCGRect(rect.ToCGRect()));
   new_rect.origin.y = NSHeight([self bounds]) - NSMaxY(new_rect);
   return new_rect;
 }
 
 @end