[DevTools] Add stub handlers for synthetic gesture commands.

content/browser/devtools/protocol/input_handler.cc

Index: content/browser/devtools/protocol/input_handler.cc
diff --git a/content/browser/devtools/protocol/input_handler.cc b/content/browser/devtools/protocol/input_handler.cc
index 05cff6195a1f7bfba9a53802410c89a60069e45e..d28a1e4b316c184735756928204a24e747f321ee 100644
--- a/content/browser/devtools/protocol/input_handler.cc
+++ b/content/browser/devtools/protocol/input_handler.cc
@@ -25,6 +25,9 @@ void InputHandler::SetRenderViewHost(RenderViewHostImpl* host) {
   host_ = host;
 }
 
+void InputHandler::SetClient(scoped_ptr<DevToolsProtocolClient> client) {
+}
+
 Response InputHandler::EmulateTouchFromMouseEvent(const std::string& type,
                                                   int x,
                                                   int y,
@@ -106,6 +109,40 @@ Response InputHandler::EmulateTouchFromMouseEvent(const std::string& type,
   return Response::OK();
 }
 
+Response InputHandler::SynthesizePinchGesture(
+    DevToolsCommandId command_id,
+    int x,
+    int y,
+    double scale_factor,
+    const int* relative_speed,
+    const std::string* gesture_source_type) {
+  return Response::InternalError("Not yet implemented");
+}
+
+Response InputHandler::SynthesizeScrollGesture(
+    DevToolsCommandId command_id,
+    int x,
+    int y,
+    const int* x_distance,
+    const int* y_distance,
+    const int* x_overscroll,
+    const int* y_overscroll,
+    const bool* prevent_fling,
+    const int* speed,
+    const std::string* gesture_source_type) {
+  return Response::InternalError("Not yet implemented");
+}
+
+Response InputHandler::SynthesizeTapGesture(
+    DevToolsCommandId command_id,
+    int x,
+    int y,
+    const int* duration,
+    const int* tap_count,
+    const std::string* gesture_source_type) {
+  return Response::InternalError("Not yet implemented");
+}
+
 }  // namespace input
 }  // namespace devtools
 }  // namespace content