Add some modifiers to eventSender for test.

content/shell/renderer/test_runner/event_sender.cc

 // 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.
 
 #include "content/shell/renderer/test_runner/event_sender.h"
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 #include "content/public/common/page_zoom.h"
@@ skipping 75 matching lines @@
     return WebInputEvent::MetaKey;
 #endif
   } else if (!strcmp(characters, "autoRepeat")) {
     return WebInputEvent::IsAutoRepeat;
   } else if (!strcmp(characters, "copyKey")) {
 #ifdef __APPLE__
     return WebInputEvent::AltKey;
 #else
     return WebInputEvent::ControlKey;
 #endif
+  } else if (!strcmp(characters, "leftButton")) {
+    return WebInputEvent::LeftButtonDown;
+  } else if (!strcmp(characters, "middleButton")) {
+    return WebInputEvent::MiddleButtonDown;
+  } else if (!strcmp(characters, "rightButton")) {
+    return WebInputEvent::RightButtonDown;
   }
 
   return 0;
 }
 
 int GetKeyModifiers(const std::vector<std::string>& modifier_names) {
   int modifiers = 0;
   for (std::vector<std::string>::const_iterator it = modifier_names.begin();
        it != modifier_names.end(); ++it) {
     modifiers |= GetKeyModifier(*it);
@@ skipping 2190 matching lines @@
       }
       default:
         NOTREACHED();
     }
   }
 
   replaying_saved_events_ = false;
 }
 
 }  // namespace content