Update from https://crrev.com/306655

gpu/command_buffer/service/program_manager.cc

Index: gpu/command_buffer/service/program_manager.cc
diff --git a/gpu/command_buffer/service/program_manager.cc b/gpu/command_buffer/service/program_manager.cc
index f3c447cbd03c8c6075c65a67a366218f1268f6a7..1de61bbe8e4b65c1dd7dddaaa6d58c93fcffa689 100644
--- a/gpu/command_buffer/service/program_manager.cc
+++ b/gpu/command_buffer/service/program_manager.cc
@@ -14,6 +14,7 @@
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/metrics/histogram.h"
+#include "base/numerics/safe_math.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/time/time.h"
@@ -66,7 +67,7 @@ bool GetUniformNameSansElement(
     return false;
   }
 
-  GLint index = 0;
+  base::CheckedNumeric<GLint> index = 0;
   size_t last = name.size() - 1;
   for (size_t pos = open_pos + 1; pos < last; ++pos) {
     int8 digit = name[pos] - '0';
@@ -75,8 +76,11 @@ bool GetUniformNameSansElement(
     }
     index = index * 10 + digit;
   }
+  if (!index.IsValid()) {
+    return false;
+  }
 
-  *element_index = index;
+  *element_index = index.ValueOrDie();
   *new_name = name.substr(0, open_pos);
   return true;
 }