Reverting due to Android builders breakage. Subsequent fixes did not fix.

build/get_landmines.py

Index: build/get_landmines.py
diff --git a/build/get_landmines.py b/build/get_landmines.py
index 5fdb1bacdf3af07c34169d15ab5768603460dfc2..eb59367e12b06b0b92c8276f3d057b302979765d 100755
--- a/build/get_landmines.py
+++ b/build/get_landmines.py
@@ -28,7 +28,8 @@ def print_landmines():
       builder() == 'ninja'):
     print 'Need to clobber winja goma due to backend cwd cache fix.'
   if platform() == 'android':
-    print 'Clobber: to handle new way of suppressing findbugs failures.'
+    print 'Clobber: To delete newly generated mojo class files.'
+    print 'Clobber to ensure that recipe tests do not break (issue 680923002).'
   if platform() == 'win' and builder() == 'ninja':
     print 'Compile on cc_unittests fails due to symbols removed in r185063.'
   if platform() == 'linux' and builder() == 'ninja':
@@ -57,6 +58,9 @@ def print_landmines():
   print '[chromium-dev] PSA: clobber build needed for IDR_INSPECTOR_* compil...'
   print 'blink_resources.grd changed: crbug.com/400860'
   print 'ninja dependency cycle: crbug.com/408192'
+  if platform() == 'android':
+    print 'Delete stale generated .java files yet again. crbug.com/349592'
+    print 'Clobber to delete incompatible object binary format with NDK r10c'
   print 'Clobber to fix missing NaCl gyp dependencies (crbug.com/427427).'
   print 'Another clobber for missing NaCl gyp deps (crbug.com/427427).'
   print 'Clobber to fix GN not picking up increased ID range (crbug.com/444902)'