Add a gyp "buildtype" variable to differentiate official release builds.

chrome/chrome.gyp

 # Copyright (c) 2009 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.
 
 {
   'variables': {
     'chromium_code': 1,
     # Define the common dependencies that contain all the actual
     # Chromium functionality.  This list gets pulled in below by
     # the link of the actual chrome (or chromium) executable on
@@ skipping 2399 matching lines @@
       # listed here.
       'mac_bundle_resources!': [
         'app/app-Info.plist',
       ],
       'xcode_settings': {
         'INFOPLIST_FILE': 'app/app-Info.plist',
       },
       'conditions': [
         ['OS=="linux"', {
           'conditions': [
-            ['branding=="Chrome"', {
+            # All Chrome builds have breakpad symbols, but only process the
+            # symbols from official builds.
+            ['branding=="Chrome" and buildtype=="Official"', {
               'actions': [
                 {
                   'action_name': 'dump_symbols',
                   'inputs': [
                     '<(DEPTH)/build/linux/dump_app_syms',
                     '<(DEPTH)/build/linux/dump_signature.py',
                     '<(PRODUCT_DIR)/dump_syms',
                     '<(PRODUCT_DIR)/chrome',
                   ],
                   'outputs': [
@@ skipping 1454 matching lines @@
       }
     }, {
       'variables': {
         'mac_breakpad%': 0,
         'mac_keystone%': 0,
         'mac_product_name%': 'Chromium',
       }
     }],
     ['OS=="linux"', {
       'conditions': [
+        # Only Chrome builds get breakpad since crash processing is internal.
         ['branding=="Chrome"', {
           'variables': {
             'linux_breakpad%': 1,
           },
         }, {
           'variables': {
             'linux_breakpad%': 0,
           },
         }],
       ],
@@ skipping 897 matching lines @@
               # Use outputs of this action as inputs for the main target build.
               # Seems as a misnomer but makes this happy on Linux (scons).
               'process_outputs_as_sources': 1,
             },
           ],  # 'actions'
         },
       ]
     }],
   ],  # 'conditions'
 }