android: Add basic support for Broadcom GPUs

gpu/command_buffer/service/async_pixel_transfer_delegate_android.cc

Index: gpu/command_buffer/service/async_pixel_transfer_delegate_android.cc
diff --git a/gpu/command_buffer/service/async_pixel_transfer_delegate_android.cc b/gpu/command_buffer/service/async_pixel_transfer_delegate_android.cc
index 2d834c9d556e1cbe63ded4e7bc3e2e527086d99e..0e4450945d46ba7e85fad411fa94bb341c1b366f 100644
--- a/gpu/command_buffer/service/async_pixel_transfer_delegate_android.cc
+++ b/gpu/command_buffer/service/async_pixel_transfer_delegate_android.cc
@@ -20,6 +20,10 @@ namespace gpu {
 AsyncPixelTransferDelegate* AsyncPixelTransferDelegate::Create(
     gfx::GLContext* context) {
   TRACE_EVENT0("gpu", "AsyncPixelTransferDelegate::Create");
+  bool is_broadcom = false;
+  const char* vendor = reinterpret_cast<const char*>(glGetString(GL_VENDOR));
+  if (vendor)
+    is_broadcom = std::string(vendor).find("Broadcom") != std::string::npos;
   switch (gfx::GetGLImplementation()) {
     case gfx::kGLImplementationEGLGLES2:
       DCHECK(context);
@@ -27,7 +31,8 @@ AsyncPixelTransferDelegate* AsyncPixelTransferDelegate::Create(
           context->HasExtension("EGL_KHR_image") &&
           context->HasExtension("EGL_KHR_image_base") &&
           context->HasExtension("EGL_KHR_gl_texture_2D_image") &&
-          context->HasExtension("GL_OES_EGL_image")) {
+          context->HasExtension("GL_OES_EGL_image") &&
+          !is_broadcom) {
         return new AsyncPixelTransferDelegateEGL;
       }
       LOG(INFO) << "Async pixel transfers not supported";