Add a factory and defines for native Linux surfaces.

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index eb3c74726507c8701e92a29d290b61d05ed13317..1f402a087b3615ad4ac910faa088cee717e5f61c 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -29,6 +29,9 @@
 
             # Whether or not we are using the embedded messagepump.
             'use_messagepump_linux%': 0,
+
+            # Use a raw surface abstraction.
+            'use_native_surface_linux%': 0,
           },
           # Copy conditionally-set variables out one scope.
           'chromeos%': '<(chromeos)',
@@ -38,6 +41,9 @@
           # Whether or not we are using the /dev/input/event* message pump.
           'use_messagepump_linux%': '<(use_messagepump_linux)',
 
+          # Use a raw Linux framebuffer.
+          'use_native_surface_linux%': '<(use_native_surface_linux)',
+
           # Whether we are using Views Toolkit
           'toolkit_views%': 0,
 
@@ -98,6 +104,7 @@
         'use_aura%': '<(use_aura)',
         'use_ash%': '<(use_ash)',
         'use_messagepump_linux%': '<(use_messagepump_linux)',
+        'use_native_surface_linux%': '<(use_native_surface_linux)',
         'use_openssl%': '<(use_openssl)',
         'enable_viewport%': '<(enable_viewport)',
         'enable_hidpi%': '<(enable_hidpi)',
@@ -182,6 +189,7 @@
       'use_aura%': '<(use_aura)',
       'use_ash%': '<(use_ash)',
       'use_messagepump_linux%': '<(use_messagepump_linux)',
+      'use_native_surface_linux%': '<(use_native_surface_linux)',
       'use_openssl%': '<(use_openssl)',
       'enable_viewport%': '<(enable_viewport)',
       'enable_hidpi%': '<(enable_hidpi)',
@@ -719,6 +727,7 @@
     'os_posix%': '<(os_posix)',
     'use_glib%': '<(use_glib)',
     'use_messagepump_linux%': '<(use_messagepump_linux)',
+     'use_native_surface_linux%': '<(use_native_surface_linux)',
     'toolkit_uses_gtk%': '<(toolkit_uses_gtk)',
     'use_x11%': '<(use_x11)',
     'use_gnome_keyring%': '<(use_gnome_keyring)',
@@ -1837,6 +1846,9 @@
       ['use_messagepump_linux==1', {
         'defines': ['USE_MESSAGEPUMP_LINUX=1'],
       }],
+      ['use_native_surface_linux==1', {
+        'defines': ['USE_NATIVE_SURFACE_LINUX=1'],
+      }],
       ['use_default_render_theme==1', {
         'defines': ['USE_DEFAULT_RENDER_THEME=1'],
       }],
@@ -2622,6 +2634,7 @@
           '<(werror)',  # See note above about the werror variable.
           '-pthread',
           '-fno-exceptions',
+          '-funwind-tables', # Emit unwind tables despite -fno-exceptions.

[jonathan.backer, 2013/04/30 12:41:20]

IDK what this is, but I don't see it on ToT. Merge error?

           '-fno-strict-aliasing',  # See http://crbug.com/32204
           '-Wall',
           # TODO(evan): turn this back on once all the builds work.