Coverity fix: Big parameter passed by value

gpu/command_buffer/service/program_manager.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "gpu/command_buffer/service/program_manager.h"
 
 #include <algorithm>
 #include <set>
 #include <utility>
 #include <vector>
@@ skipping 39 matching lines @@
     default:
       NOTREACHED();
       return NULL;
   }
 }
 
 // Given a name like "foo.bar[123].moo[456]" sets new_name to "foo.bar[123].moo"
 // and sets element_index to 456. returns false if element expression was not a
 // whole decimal number. For example: "foo[1b2]"
 bool GetUniformNameSansElement(
-    const std::string name, int* element_index, std::string* new_name) {
+    const std::string& name, int* element_index, std::string* new_name) {
   DCHECK(element_index);
   DCHECK(new_name);
   if (name.size() < 3 || name[name.size() - 1] != ']') {
     *element_index = 0;
     *new_name = name;
     return true;
   }
 
   // Look for an array specification.
   size_t open_pos = name.find_last_of('[');
@@ skipping 1043 matching lines @@
     info->ClearUniforms(&zero_);
   }
 }
 
 int32 ProgramManager::MakeFakeLocation(int32 index, int32 element) {
   return index + element * 0x10000;
 }
 
 }  // namespace gles2
 }  // namespace gpu
-
-