Improve javac.py --incremental logic by having it recompile more files

build/android/gyp/util/md5_check.py

Index: build/android/gyp/util/md5_check.py
diff --git a/build/android/gyp/util/md5_check.py b/build/android/gyp/util/md5_check.py
index 699d3bfe143b278ef55897b4cae46e38e46071c5..a2d799533a9ce71b4db95ecbb311271c7fabdd42 100644
--- a/build/android/gyp/util/md5_check.py
+++ b/build/android/gyp/util/md5_check.py
@@ -12,7 +12,7 @@ import zipfile
 
 
 # When set and a difference is detected, a diff of what changed is printed.
-_PRINT_MD5_DIFFS = int(os.environ.get('PRINT_MD5_DIFFS', 0))
+PRINT_EXPLANATIONS = int(os.environ.get('PRINT_INCREMENTAL_EXPLANATIONS', 0))
 
 
 def CallAndRecordIfStale(
@@ -26,7 +26,7 @@ def CallAndRecordIfStale(
   - the contents of input_strings has changed.
 
   To debug which files are out-of-date, set the environment variable:
-      PRINT_MD5_DIFFS=1
+      PRINT_INCREMENTAL_EXPLANATIONS=1
 
   Args:
     function: The function to call.
@@ -73,7 +73,7 @@ def CallAndRecordIfStale(
   if not changes.HasChanges():
     return
 
-  if _PRINT_MD5_DIFFS:
+  if PRINT_EXPLANATIONS:
     print '=' * 80
     print 'Target is stale: %s' % record_path
     print changes.DescribeDifference()