Make event sender supply a good default area for tap gesture events

In most real-world scenarios, tap gestures will come with an area and so
trigger a very different hit testing path in blink (for touch adjustment).
We've had a few cases of missing test coverage for tests that didn't
explicitly supply an area.  So now default to using a reasonable area if
none is provided.

BUG=None

Review URL: https://codereview.chromium.org/423593003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@286873 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/content/shell/renderer/test_runner/event_sender.cc b/content/shell/renderer/test_runner/event_sender.cc
index 8791a2f..e80e5951 100644
--- a/content/shell/renderer/test_runner/event_sender.cc
+++ b/content/shell/renderer/test_runner/event_sender.cc
@@ -1923,37 +1923,36 @@
       event.x = current_gesture_location_.x;
       event.y = current_gesture_location_.y;
       break;
-    case WebInputEvent::GestureTap:
+    case WebInputEvent::GestureTap: 
+    {
+      float tap_count = 1;
+      float width = 30;
+      float height = 30;
       if (!args->PeekNext().IsEmpty()) {
-        float tap_count;
         if (!args->GetNext(&tap_count)) {
           args->ThrowError();
           return;
         }
-        event.data.tap.tapCount = tap_count;
-      } else {
-        event.data.tap.tapCount = 1;
       }
       if (!args->PeekNext().IsEmpty()) {
-        float width;
         if (!args->GetNext(&width)) {
           args->ThrowError();
           return;
         }
-        event.data.tap.width = width;
       }
       if (!args->PeekNext().IsEmpty()) {
-        float height;
         if (!args->GetNext(&height)) {
           args->ThrowError();
           return;
         }
-        event.data.tap.height = height;
       }
-
+      event.data.tap.tapCount = tap_count;
+      event.data.tap.width = width;
+      event.data.tap.height = height;
       event.x = point.x;
       event.y = point.y;
       break;
+    }
     case WebInputEvent::GestureTapUnconfirmed:
       if (!args->PeekNext().IsEmpty()) {
         float tap_count;
@@ -1969,45 +1968,49 @@
       event.y = point.y;
       break;
     case WebInputEvent::GestureTapDown:
-      event.x = point.x;
-      event.y = point.y;
+    {
+      float width = 30;
+      float height = 30;
       if (!args->PeekNext().IsEmpty()) {
-        float width;
         if (!args->GetNext(&width)) {
           args->ThrowError();
           return;
         }
-        event.data.tapDown.width = width;
       }
       if (!args->PeekNext().IsEmpty()) {
-        float height;
         if (!args->GetNext(&height)) {
           args->ThrowError();
           return;
         }
-        event.data.tapDown.height = height;
       }
-      break;
-    case WebInputEvent::GestureShowPress:
       event.x = point.x;
       event.y = point.y;
+      event.data.tapDown.width = width;
+      event.data.tapDown.height = height;
+      break;
+    }
+    case WebInputEvent::GestureShowPress:
+    {
+      float width = 30;
+      float height = 30;
       if (!args->PeekNext().IsEmpty()) {
-        float width;
         if (!args->GetNext(&width)) {
           args->ThrowError();
           return;
         }
-        event.data.showPress.width = width;
         if (!args->PeekNext().IsEmpty()) {
-          float height;
           if (!args->GetNext(&height)) {
             args->ThrowError();
             return;
           }
-          event.data.showPress.height = height;
         }
       }
+      event.x = point.x;
+      event.y = point.y;
+      event.data.showPress.width = width;
+      event.data.showPress.height = height;
       break;
+    }
     case WebInputEvent::GestureTapCancel:
       event.x = point.x;
       event.y = point.y;