Drop empty [] for dictionaries and interfaces in IDL files

third_party/WebKit/Source/core/input/InputDeviceCapabilities.idl

Index: third_party/WebKit/Source/core/input/InputDeviceCapabilities.idl
diff --git a/third_party/WebKit/Source/core/input/InputDeviceCapabilities.idl b/third_party/WebKit/Source/core/input/InputDeviceCapabilities.idl
index 98ef6336296c8e860ee6ba361505638e8d83576d..5fe982c190f33b82d0573685c21c77805063b1f1 100644
--- a/third_party/WebKit/Source/core/input/InputDeviceCapabilities.idl
+++ b/third_party/WebKit/Source/core/input/InputDeviceCapabilities.idl
@@ -3,7 +3,7 @@
 // found in the LICENSE file.
 
 // Represents capabilities for a group of related input devices.
-// To ease implementation, developers cannot rely on comparing two 
+// To ease implementation, developers cannot rely on comparing two
 // InputDeviceCapabilities instances for equality. Now we only have two
 // InputDeviceCapabilities instances: one for devices which send touch
 // events, and one for those that don't, because currently all we care
@@ -12,7 +12,7 @@
 [
     Constructor(optional InputDeviceCapabilitiesInit deviceInitDict),
 ] interface InputDeviceCapabilities {
-    
+
     // Whether this device dispatches touch events for movement.  This is used to detect
     // mouse events which represent only an action that has already been handled  by
     // touch event handlers.