Mac: Speculative fix for tracking area crashes

content/browser/renderer_host/render_widget_host_view_mac.mm

 // Copyright (c) 2012 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 "content/browser/renderer_host/render_widget_host_view_mac.h"
 
 #import <objc/runtime.h>
 #include <OpenGL/gl.h>
 #include <QuartzCore/QuartzCore.h>
 
@@ skipping 1685 matching lines @@
 }  // namespace content
 
 // RenderWidgetHostViewCocoa ---------------------------------------------------
 
 @implementation RenderWidgetHostViewCocoa
 @synthesize selectedRange = selectedRange_;
 @synthesize suppressNextEscapeKeyUp = suppressNextEscapeKeyUp_;
 @synthesize markedRange = markedRange_;
 
 - (id)initWithRenderWidgetHostViewMac:(RenderWidgetHostViewMac*)r {
-  self = [super initWithFrame:NSZeroRect];
+  self = [super initWithFrame:NSZeroRect wantsReliableMouseEvents:YES];
   if (self) {
     self.acceptsTouchEvents = YES;
     editCommand_helper_.reset(new RenderWidgetHostViewMacEditCommandHelper);
     editCommand_helper_->AddEditingSelectorsToClass([self class]);
 
     renderWidgetHostView_.reset(r);
     canBeKeyView_ = YES;
     opaque_ = YES;
     focusedPluginIdentifier_ = -1;
 
@@ skipping 1439 matching lines @@
 
   // Inserting text will delete all marked text automatically.
   hasMarkedText_ = NO;
 }
 
 - (void)insertText:(id)string {
   [self insertText:string replacementRange:NSMakeRange(NSNotFound, 0)];
 }
 
 - (void)viewDidMoveToWindow {
+  [super viewDidMoveToWindow];
+
   if ([self window]) {
     [self updateScreenProperties];
   } else {
     // If the RenderWidgetHostViewCocoa is being removed from its window, tear
     // down its browser compositor resources, if needed.
     renderWidgetHostView_->DestroySuspendedBrowserCompositorViewIfNeeded();
   }
 
   if (canBeKeyView_) {
     NSWindow* newWindow = [self window];
@@ skipping 247 matching lines @@
 
 // "-webkit-app-region: drag | no-drag" is implemented on Mac by excluding
 // regions that are not draggable. (See ControlRegionView in
 // native_app_window_cocoa.mm). This requires the render host view to be
 // draggable by default.
 - (BOOL)mouseDownCanMoveWindow {
   return YES;
 }
 
 @end