Includes GMS version in crash report.

base/android/build_info.h

Index: base/android/build_info.h
diff --git a/base/android/build_info.h b/base/android/build_info.h
index 07dba43de792617a7e4651a31c5e0580702a7568..838d6f802ca8ee0e916d22767c39c5ed686c5650 100644
--- a/base/android/build_info.h
+++ b/base/android/build_info.h
@@ -74,6 +74,10 @@ class BASE_EXPORT BuildInfo {
     return android_build_fp_;
   }
 
+  const char* gms_version_code() const {
+    return gms_version_code_;
+  }
+
   const char* package_version_code() const {
     return package_version_code_;
   }
@@ -123,6 +127,7 @@ class BASE_EXPORT BuildInfo {
   const char* const brand_;
   const char* const android_build_id_;
   const char* const android_build_fp_;
+  const char* const gms_version_code_;
   const char* const package_version_code_;
   const char* const package_version_name_;
   const char* const package_label_;