Experiment with clang-format for android java files.

BUG=429372
NOTRY=true

Review URL: https://codereview.chromium.org/697783002

Cr-Commit-Position: refs/heads/master@{#302358}

.clang-format

@@ -6,3 +6,11 @@ BasedOnStyle: Chromium
 # 'vector<vector<int>>'. ('Auto' means that clang-format will only use
 # 'int>>' if the file already contains at least one such instance.)
 Standard: Cpp11
+
+---
+Language: Java
+# See http://crbug.com/429372 for information about this section.
+IndentWidth: 4
+ContinuationIndentWidth: 8
+ColumnLimit: 100
+AllowShortIfStatementsOnASingleLine: true