[IPC fuzzer] Add a missing case when generating content::SyntheticGesturePacket.

tools/ipc_fuzzer/fuzzer/fuzzer.cc

 // Copyright 2015 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 <iostream>
 #include <set>
 #include <string>
 #include <tuple>
 #include <utility>
 #include <vector>
@@ skipping 958 matching lines @@
       case content::SyntheticGestureParams::GestureType::TAP_GESTURE: {
         content::SyntheticTapGestureParams* params =
             new content::SyntheticTapGestureParams();
         if (!FuzzParam(&params->position, fuzzer))
           return false;
         if (!FuzzParam(&params->duration_ms, fuzzer))
           return false;
         gesture_params.reset(params);
         break;
       }
+      case content::SyntheticGestureParams::GestureType::POINTER_ACTION: {
+        content::SyntheticPointerActionParams::PointerActionType action_type;
+        gfx::PointF position;
+        int index;
+        if (!FuzzParam(&action_type, fuzzer))
+          return false;
+        if (!FuzzParam(&position, fuzzer))
+          return false;
+        if (!FuzzParam(&index, fuzzer))
+          return false;
+        content::SyntheticPointerActionParams* params =
+            new content::SyntheticPointerActionParams(action_type);
+        params->set_position(position);
+        params->set_index(index);
+        gesture_params.reset(params);
+        break;
+      }
     }
     p->set_gesture_params(std::move(gesture_params));
     return true;
   }
 };
 
 template <>
 struct FuzzTraits<content::WebCursor> {
   static bool Fuzz(content::WebCursor* p, Fuzzer* fuzzer) {
     content::WebCursor::CursorInfo info;
@@ skipping 1035 matching lines @@
 #include "tools/ipc_fuzzer/message_lib/all_message_null_macros.h"
 #undef IPC_MESSAGE_DECL
 #define IPC_MESSAGE_DECL(name, ...) \
   (*map)[static_cast<uint32_t>(name::ID)] = FuzzerHelper<name>::Fuzz;
 
 void PopulateFuzzerFunctionMap(FuzzerFunctionMap* map) {
 #include "tools/ipc_fuzzer/message_lib/all_messages.h"
 }
 
 }  // namespace ipc_fuzzer