replace some tabs with spaces

chrome/chrome.gyp

Index: chrome/chrome.gyp
===================================================================
--- chrome/chrome.gyp	(revision 17347)
+++ chrome/chrome.gyp	(working copy)
@@ -72,10 +72,10 @@
                 # consistency they should look for GOOGLE_CHROME_BUILD like C++.
                 # Clean this up when Windows moves to gyp.
                 'chrome_build': '_google_chrome',
-		'branded_env': 'CHROMIUM_BUILD=google_chrome',
+                'branded_env': 'CHROMIUM_BUILD=google_chrome',
               }, {  # else: branding!="Chrome"
                 'chrome_build': '_chromium',
-		'branded_env': 'CHROMIUM_BUILD=chromium',
+                'branded_env': 'CHROMIUM_BUILD=chromium',
               }],
             ],
           },
@@ -89,8 +89,8 @@
           'action': ['python', '<@(_inputs)', '-i', '<(RULE_INPUT_PATH)',
             'build', '-o', '<(SHARED_INTERMEDIATE_DIR)/chrome',
             '-D', '<(chrome_build)',
-	    '-E', '<(branded_env)',
-	    ],
+            '-E', '<(branded_env)',
+          ],
           'message': 'Generating resources from <(RULE_INPUT_PATH)',
         },
       ],
@@ -3702,7 +3702,7 @@
           ],
           'link_settings': {
             'libraries': [
-	      '-lcomsuppw.lib',
+              '-lcomsuppw.lib',
             ],
           },
           'sources': [