Android mouse events shouldn't appear as TouchEvents

content/browser/android/content_view_core_impl.h

Index: content/browser/android/content_view_core_impl.h
diff --git a/content/browser/android/content_view_core_impl.h b/content/browser/android/content_view_core_impl.h
index d424789e1e996ffea1541dfae1847f0acafc2361..1c0bf290cf14290ad7715552481f531ffaf40c3a 100644
--- a/content/browser/android/content_view_core_impl.h
+++ b/content/browser/android/content_view_core_impl.h
@@ -128,12 +128,19 @@ class ContentViewCoreImpl : public ContentViewCore,
       jint android_button_state,
       jint android_meta_state,
       jboolean is_touch_handle_event);
-  jboolean SendMouseMoveEvent(JNIEnv* env,
-                              const base::android::JavaParamRef<jobject>& obj,
-                              jlong time_ms,
-                              jfloat x,
-                              jfloat y,
-                              jint tool_type);
+  jboolean SendMouseEvent(JNIEnv* env,
+                          const base::android::JavaParamRef<jobject>& obj,
+                          jlong time_ms,
+                          jint android_action,
+                          jfloat x,
+                          jfloat y,
+                          jint pointer_id,
+                          jfloat pressure,
+                          jfloat orientation,
+                          jfloat tilt,
+                          jint android_button_state,
+                          jint android_meta_state,
+                          jint tool_type);
   jboolean SendMouseWheelEvent(JNIEnv* env,
                                const base::android::JavaParamRef<jobject>& obj,
                                jlong time_ms,
@@ -472,6 +479,9 @@ class ContentViewCoreImpl : public ContentViewCore,
 
   bool accessibility_enabled_;
 
+  // The buttons currently depressed, see MotionEvent.getButtonState().
+  int button_state_;

[aelias_OOO_until_Jul13, 2016/10/20 23:26:29]

FWIW, this state doesn't really belong here, although I understand it's needed
to work around a bug...  I'm mulling over if there's any way it could be
avoided.  Could you rebase this patch so that I can apply it locally and observe
the buggy early-pressed MouseMoves?

[mustaq, 2016/10/21 19:19:08]

The latest patch is after a rebase. I have also added enter/leave plumbing
there, checked only on M. Still couldn't locate an N device here :(

[mustaq, 2016/10/26 17:45:09]

Discovered today that my last patch was unusable for unhandled hover-moves.
Fixed.

+
   // Manages injecting Java objects.
   scoped_refptr<GinJavaBridgeDispatcherHost> java_bridge_dispatcher_host_;