ui: Refactor GLImageEGL for usage by targets other than EGL_NATIVE_BUFFER_ANDROID.

android_webview/browser/gpu_memory_buffer_factory_impl.cc

Index: android_webview/browser/gpu_memory_buffer_factory_impl.cc
diff --git a/android_webview/browser/gpu_memory_buffer_factory_impl.cc b/android_webview/browser/gpu_memory_buffer_factory_impl.cc
index 57b1123715dafe7ac7e05a1ab229d1e7b1a18c20..4e2f5d798a10e979ba9b7df84ce0902fa1d0c26f 100644
--- a/android_webview/browser/gpu_memory_buffer_factory_impl.cc
+++ b/android_webview/browser/gpu_memory_buffer_factory_impl.cc
@@ -62,7 +62,7 @@ class GpuMemoryBufferImpl : public gfx::GpuMemoryBuffer {
   }
   virtual gfx::GpuMemoryBufferHandle GetHandle() const OVERRIDE {
     gfx::GpuMemoryBufferHandle handle;
-    handle.type = gfx::EGL_CLIENT_BUFFER;
+    handle.type = gfx::ANDROID_NATIVE_BUFFER;
     handle.native_buffer = g_gl_draw_functions->get_native_buffer(buffer_id_);
     return handle;
   }