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

content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java

Index: content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java b/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
index 50044ae9e2bd94dae0e8ffe57202de5dc144819f..db620c58dfb11a840ff4b36fb35aa5f3d8836ac9 100644
--- a/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
+++ b/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
@@ -1109,7 +1109,10 @@ public class ContentViewCore
                     pointerCount > 1 ? event.getY(1) : 0,
                     event.getPointerId(0), pointerCount > 1 ? event.getPointerId(1) : -1,
                     event.getTouchMajor(), pointerCount > 1 ? event.getTouchMajor(1) : 0,
-                    event.getRawX(), event.getRawY());
+                    event.getRawX(), event.getRawY(),
+                    event.getToolType(0),
+                    pointerCount > 1 ? event.getToolType(1) : MotionEvent.TOOL_TYPE_UNKNOWN,
+                    event.getButtonState());
 
             if (offset != null) offset.recycle();
             return consumed;
@@ -2399,6 +2402,12 @@ public class ContentViewCore
 
     @SuppressWarnings("unused")
     @CalledByNative
+    private void showSelectionHandlesAutomatically() {
+        getSelectionHandleController().allowAutomaticShowing();
+    }
+
+    @SuppressWarnings("unused")
+    @CalledByNative
     private void onSelectionBoundsChanged(Rect anchorRectDip, int anchorDir, Rect focusRectDip,
             int focusDir, boolean isAnchorFirst) {
         // All coordinates are in DIP.
@@ -3126,7 +3135,8 @@ public class ContentViewCore
             float x0, float y0, float x1, float y1,
             int pointerId0, int pointerId1,
             float touchMajor0, float touchMajor1,
-            float rawX, float rawY);
+            float rawX, float rawY,
+            int androidToolType0, int androidToolType1, int androidButtonState);
 
     private native int nativeSendMouseMoveEvent(
             long nativeContentViewCoreImpl, long timeMs, float x, float y);