Add SkNativeGLContext implementation for iOS.

R=caryclark@google.com
Review URL: https://codereview.appspot.com/6589055

git-svn-id: http://skia.googlecode.com/svn/trunk@5767 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gyp/gpu.gyp b/gyp/gpu.gyp
index 94988ad..98ab257 100644
--- a/gyp/gpu.gyp
+++ b/gyp/gpu.gyp
@@ -6,7 +6,7 @@
         ],
       }],
       ['skia_os != "mac"', {
-        'sources/': [ ['exclude', '_mac.(h|cpp)$'],
+        'sources/': [ ['exclude', '_mac.(h|cpp|m|mm)$'],
         ],
       }],
       ['skia_os != "linux"', {
@@ -14,7 +14,7 @@
         ],
       }],
       ['skia_os != "ios"', {
-        'sources/': [ ['exclude', '_iOS.(h|cpp)$'],
+        'sources/': [ ['exclude', '_iOS.(h|cpp|m|mm)$'],
         ],
       }],
       ['skia_os != "android"', {
diff --git a/gyp/gpu.gypi b/gyp/gpu.gypi
index 840abf5..9afddc4 100644
--- a/gyp/gpu.gypi
+++ b/gyp/gpu.gypi
@@ -237,6 +237,7 @@
       '<(skia_src_path)/gpu/gl/win/SkNativeGLContext_win.cpp',
       '<(skia_src_path)/gpu/gl/unix/SkNativeGLContext_unix.cpp',
       '<(skia_src_path)/gpu/gl/android/SkNativeGLContext_android.cpp',
+      '<(skia_src_path)/gpu/gl/iOS/SkNativeGLContext_iOS.mm',
     ],
     'skgr_angle_gl_sources': [
       '<(skia_include_path)/gpu/gl/SkANGLEGLContext.h',