MacViews: Add WidgetEventGenerator to abstract platform-specific event generation for tests.

ui/views/cocoa/bridged_content_view.mm

 // Copyright 2014 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.
 
 #import "ui/views/cocoa/bridged_content_view.h"
 
 #include "base/logging.h"
 #include "ui/gfx/canvas_paint_mac.h"
 #include "ui/views/view.h"
+#include "ui/views/widget/widget.h"
+
+@interface BridgedContentView ()
+
+// Translates the location of |theEvent| to toolkit-views coordinates and passes
+// the event to NativeWidgetMac for handling.
+- (void)handleMouseEvent:(NSEvent*)theEvent;
+
+@end
 
 @implementation BridgedContentView
 
 @synthesize hostedView = hostedView_;
 
 - (id)initWithView:(views::View*)viewToHost {
   DCHECK(viewToHost);
   gfx::Rect bounds = viewToHost->bounds();
   // To keep things simple, assume the origin is (0, 0) until there exists a use
   // case for something other than that.
   DCHECK(bounds.origin().IsOrigin());
   NSRect initialFrame = NSMakeRect(0, 0, bounds.width(), bounds.height());
   if ((self = [super initWithFrame:initialFrame]))
     hostedView_ = viewToHost;
 
   return self;
 }
 
 - (void)clearView {
   hostedView_ = NULL;
 }
 
+// BridgedContentView private implementation.
+
+- (void)handleMouseEvent:(NSEvent*)theEvent {
+  if (!hostedView_)
+    return;
+
+  ui::MouseEvent event(theEvent);
+  hostedView_->GetWidget()->OnMouseEvent(&event);
+}
+
 // NSView implementation.
 
 - (void)setFrameSize:(NSSize)newSize {
   [super setFrameSize:newSize];
   if (!hostedView_)
     return;
 
   hostedView_->SetSize(gfx::Size(newSize.width, newSize.height));
 }
 
 - (void)drawRect:(NSRect)dirtyRect {
   if (!hostedView_)
     return;
 
   gfx::CanvasSkiaPaint canvas(dirtyRect, false /* opaque */);
   hostedView_->Paint(&canvas, views::CullSet());
 }
 
+- (void)mouseDown:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)rightMouseDown:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)otherMouseDown:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)mouseUp:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)rightMouseUp:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)otherMouseUp:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)mouseDragged:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)rightMouseDragged:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)otherMouseDragged:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)mouseMoved:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)scrollWheel:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)mouseEntered:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)mouseExited:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
 @end