[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 5973aefea5120b20a6900cf2b995937f6f4653d0..29083049788a685053c4059f4a26919577e56c8a 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
@@ -1101,6 +1101,8 @@ public class ContentViewCore
             }
 
             final int pointerCount = event.getPointerCount();
+            final int toolType = pointerCount > 0 ?
+                    event.getToolType(0) : MotionEvent.TOOL_TYPE_UNKNOWN;
             final boolean consumed = nativeOnTouchEvent(mNativeContentViewCore, event,
                     event.getEventTime(), eventAction,
                     pointerCount, event.getHistorySize(), event.getActionIndex(),
@@ -1109,7 +1111,8 @@ 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(),
+                    toolType, event.getButtonState());
 
             if (offset != null) offset.recycle();
             return consumed;
@@ -3142,7 +3145,8 @@ 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 androidToolType, int androidButtonState);
 
     private native int nativeSendMouseMoveEvent(
             long nativeContentViewCoreImpl, long timeMs, float x, float y);