Add PDB files for content_gl_tests.

content/content_gl_tests.isolate

 # Copyright 2013 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.
 {
   'conditions': [
     ['OS=="android" or OS=="linux" or OS=="mac" or OS=="win"', {
       'variables': {
         'command': [
           '<(PRODUCT_DIR)/content_gl_tests<(EXECUTABLE_SUFFIX)',
         ],
@@ skipping 16 matching lines @@
     ['OS=="win"', {
       'variables': {
         'files': [
           '<(PRODUCT_DIR)/d3dcompiler_47.dll',
           '<(PRODUCT_DIR)/libEGL.dll',
           '<(PRODUCT_DIR)/libGLESv2.dll',
           '<(PRODUCT_DIR)/osmesa.dll',
         ],
       },
     }],
+    # These PDBs are needed in order to get reasonable stack traces if
+    # an assertion fires or a crash occurs. Add more as necessary.
+    ['OS=="win" and (fastbuild==0 or fastbuild==1)', {
+      'variables': {
+        'files': [
+          '<(PRODUCT_DIR)/content_gl_tests.exe.pdb',
+        ],
+      },
+    }],
+    ['OS=="win" and component=="shared_library" and (fastbuild==0 or fastbuild==1)', {
+      'variables': {
+        'files': [
+          '<(PRODUCT_DIR)/base.dll.pdb',
+          '<(PRODUCT_DIR)/content.dll.pdb',
+        ],
+      },
+    }],
   ],
   'includes': [
     '../base/base.isolate',
     '../gin/v8.isolate',
   ],
 }