Disable Views fuzzing with --disable-views-rect-based-targeting.

ui/views/view.cc

Index: ui/views/view.cc
diff --git a/ui/views/view.cc b/ui/views/view.cc
index 9e6d59df3ed405ff8e039bf7d9ce0534ee6cd443..c98dd2a8470b83ae4839ba8b148efcd200de895a 100644
--- a/ui/views/view.cc
+++ b/ui/views/view.cc
@@ -42,6 +42,7 @@
 #include "ui/views/layout/layout_manager.h"
 #include "ui/views/rect_based_targeting_utils.h"
 #include "ui/views/views_delegate.h"
+#include "ui/views/views_switches.h"
 #include "ui/views/widget/native_widget_private.h"
 #include "ui/views/widget/root_view.h"
 #include "ui/views/widget/tooltip_manager.h"
@@ -97,7 +98,7 @@ class PostEventDispatchHandler : public ui::EventHandler {
  public:
   explicit PostEventDispatchHandler(View* owner)
       : owner_(owner),
-        touch_dnd_enabled_(switches::IsTouchDragDropEnabled()) {
+        touch_dnd_enabled_(::switches::IsTouchDragDropEnabled()) {
   }
   virtual ~PostEventDispatchHandler() {}
 
@@ -949,7 +950,7 @@ bool View::HitTestPoint(const gfx::Point& point) const {
 
 bool View::HitTestRect(const gfx::Rect& rect) const {
   if (GetLocalBounds().Intersects(rect)) {
-    if (HasHitTestMask()) {
+    if (views::switches::IsRectBasedTargetingEnabled() && HasHitTestMask()) {

[sadrul, 2014/01/23 00:40:42]

Does this break hit-testing along the slanted edges of the tabs?

[msw, 2014/01/23 00:54:32]

Hmm, yeah. Adjacent tabs obscure the right half of the (x) button's hit test
rect. So --disable-views-rect-based-targeting makes only the left half
responsive to hover/click, even with normal sized system fonts. That's not good,
but still better for users that can't click the (x) button at all. Shrikant's
layout/mask will be better for the long term, but this is still a potentially
viable way to help M-32 users suffering from Issue 332334. I'm open to
alternate/additional fix ideas.

       gfx::Path mask;
       HitTestSource source = HIT_TEST_SOURCE_MOUSE;
       if (!views::UsePointBasedTargeting(rect))