test_shell and test_shell_tests on Linux from gyp-generated scons files:

webkit/webkit.gyp

Index: webkit/webkit.gyp
===================================================================
--- webkit/webkit.gyp	(revision 11127)
+++ webkit/webkit.gyp	(working copy)
@@ -349,6 +349,12 @@
             '<(SHARED_INTERMEDIATE_DIR)/webkit',
           ],
         }],
+        ['OS=="linux"', {
+          'defines': ['WTF_USE_PTHREADS=1'],
+          'direct_dependent_settings': {
+            'defines': ['WTF_USE_PTHREADS=1'],
+          },
+        }],
       ],
     },
     {
@@ -1068,8 +1074,8 @@
         'port/bindings/v8/v8_nodefilter.h',
         'port/bindings/v8/V8NPUtils.cpp',
         'port/bindings/v8/V8NPUtils.h',
-        'port/bindings/v8/V8NPobject.cpp',
-        'port/bindings/v8/V8NPobject.h',
+        'port/bindings/v8/V8NPObject.cpp',
+        'port/bindings/v8/V8NPObject.h',
         'port/bindings/v8/v8_proxy.cpp',
         'port/bindings/v8/v8_proxy.h',
         'port/bindings/v8/v8_utility.h',
@@ -3175,8 +3181,8 @@
         '../third_party/WebKit/WebCore/rendering/RenderTextFragment.h',
         '../third_party/WebKit/WebCore/rendering/RenderTheme.cpp',
         '../third_party/WebKit/WebCore/rendering/RenderTheme.h',
-        '../third_party/WebKit/WebCore/rendering/RenderThemeChromiumGtk.cpp',
-        '../third_party/WebKit/WebCore/rendering/RenderThemeChromiumGtk.h',
+        '../third_party/WebKit/WebCore/rendering/RenderThemeChromiumLinux.cpp',
+        '../third_party/WebKit/WebCore/rendering/RenderThemeChromiumLinux.h',
         '../third_party/WebKit/WebCore/rendering/RenderThemeChromiumMac.h',
         '../third_party/WebKit/WebCore/rendering/RenderThemeChromiumMac.mm',
         '../third_party/WebKit/WebCore/rendering/RenderThemeChromiumWin.cpp',
@@ -3913,13 +3919,21 @@
             # Not yet ported to Linux.
             '../third_party/WebKit/WebCore/platform/graphics/chromium/FontCustomPlatformData.cpp',
           ],
-          'defines': ['WTF_USE_PTHREADS=1'],
+          'sources/': [
+            # Cherry-pick files excluded by the broader regular expressions above.
+            ['include', 'third_party/WebKit/WebCore/platform/chromium/KeyCodeConversionGtk\\.cpp$'],
+            ['include', 'third_party/WebKit/WebCore/platform/graphics/chromium/FontCacheLinux\\.cpp$'],
+            ['include', 'third_party/WebKit/WebCore/platform/graphics/chromium/FontLinux\\.cpp$'],
+            ['include', 'third_party/WebKit/WebCore/platform/graphics/chromium/FontPlatformDataLinux\\.cpp$'],
+            ['include', 'third_party/WebKit/WebCore/platform/graphics/chromium/GlyphPageTreeNodeLinux\\.cpp$'],
+            ['include', 'third_party/WebKit/WebCore/platform/graphics/chromium/SimpleFontDataLinux\\.cpp$'],
+          ],
           # for:
           #   .../WebCore/platform/image-decoders/bmp/BMPImageDecoder.cpp
           'cflags': ['-Wno-multichar'],
-	  # TODO(sgk):  unnecessary once common.gypi gets Linux settings
-	  # necessary to avoid build failure due to warnings generated by:
-	  #   ../third_party/WebKit/WebCore/dom/Document.cpp
+          # TODO(sgk):  unnecessary once common.gypi gets Linux settings
+          # necessary to avoid build failure due to warnings generated by:
+          #   ../third_party/WebKit/WebCore/dom/Document.cpp
           'scons_remove' : {'CXXFLAGS' : ['-Werror']},
         }],
         ['OS=="mac"', {
@@ -4289,6 +4303,8 @@
         'glue/webinputevent.h',
         'glue/webinputevent_linux.cc',
         'glue/webinputevent_mac.mm',
+        'glue/webinputevent_util.cc',
+        'glue/webinputevent_util.h',
         'glue/webinputevent_win.cc',
         'glue/webkit_glue.cc',
         'glue/webkit_glue.h',
@@ -4338,8 +4354,12 @@
         'webcore',
       ],
       'conditions': [
-        ['OS!="linux"', {
-          'sources/': [['exclude', '_(linux|gtk)(_data)?\\.cc$']]
+        ['OS=="linux"', {
+          'sources!': [
+            'glue/plugins/plugin_stubs.cc',
+          ],
+        }, { # else: OS!="linux"
+          'sources/': [['exclude', '_(linux|gtk)(_data)?\\.cc$']],
         }],
         ['OS!="mac"', {
           'sources/': [['exclude', '_mac\\.(cc|mm)$']]