[Android] Select text when stylus first button is pressed.

content/browser/android/content_view_core_impl.h

 // Copyright 2012 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.
 
 #ifndef CONTENT_BROWSER_ANDROID_CONTENT_VIEW_CORE_IMPL_H_
 #define CONTENT_BROWSER_ANDROID_CONTENT_VIEW_CORE_IMPL_H_
 
 #include <vector>
 
 #include "base/android/jni_android.h"
@@ skipping 92 matching lines @@
                         jint action_index,
                         jfloat pos_x_0,
                         jfloat pos_y_0,
                         jfloat pos_x_1,
                         jfloat pos_y_1,
                         jint pointer_id_0,
                         jint pointer_id_1,
                         jfloat touch_major_0,
                         jfloat touch_major_1,
                         jfloat raw_pos_x,
-                        jfloat raw_pos_y);
+                        jfloat raw_pos_y,
+                        jint android_tool_type,
+                        jint android_button_state);
   jboolean SendMouseMoveEvent(JNIEnv* env,
                               jobject obj,
                               jlong time_ms,
                               jfloat x,
                               jfloat y);
   jboolean SendMouseWheelEvent(JNIEnv* env,
                                jobject obj,
                                jlong time_ms,
                                jfloat x,
                                jfloat y,
@@ skipping 243 matching lines @@
 
   // The owning window that has a hold of main application activity.
   ui::WindowAndroid* window_android_;
 
   // The cache of device's current orientation set from Java side, this value
   // will be sent to Renderer once it is ready.
   int device_orientation_;
 
   bool accessibility_enabled_;
 
+  int mouse_drag_start_x_;
+  int mouse_drag_start_y_;
+
   // Manages injecting Java objects.
   scoped_ptr<JavaBridgeDispatcherHostManager>
       java_bridge_dispatcher_host_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentViewCoreImpl);
 };
 
 bool RegisterContentViewCore(JNIEnv* env);
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ANDROID_CONTENT_VIEW_CORE_IMPL_H_