[DevTools] Add stub handlers for synthetic gesture commands.

content/browser/devtools/protocol/input_handler.h

Index: content/browser/devtools/protocol/input_handler.h
diff --git a/content/browser/devtools/protocol/input_handler.h b/content/browser/devtools/protocol/input_handler.h
index edb71832eaf8f1a7a739fd9db76b93ee0a18a03d..062ad1e5493f9fce085307ed9b3e41043316275f 100644
--- a/content/browser/devtools/protocol/input_handler.h
+++ b/content/browser/devtools/protocol/input_handler.h
@@ -22,6 +22,7 @@ class InputHandler {
   virtual ~InputHandler();
 
   void SetRenderViewHost(RenderViewHostImpl* host);
+  void SetClient(scoped_ptr<DevToolsProtocolClient> client);
 
   Response EmulateTouchFromMouseEvent(const std::string& type,
                                       int x,
@@ -33,13 +34,38 @@ class InputHandler {
                                       int* modifiers,
                                       int* click_count);
 
+  Response SynthesizePinchGesture(DevToolsCommandId command_id,
+                                  int x,
+                                  int y,
+                                  double scale_factor,
+                                  const int* relative_speed,
+                                  const std::string* gesture_source_type);
+
+  Response 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);
+
+  Response SynthesizeTapGesture(DevToolsCommandId command_id,
+                                int x,
+                                int y,
+                                const int* duration,
+                                const int* tap_count,
+                                const std::string* gesture_source_type);
+
  private:
   RenderViewHostImpl* host_;
 
   DISALLOW_COPY_AND_ASSIGN(InputHandler);
 };
 
-}  // namespace inpue
+}  // namespace input
 }  // namespace devtools
 }  // namespace content