Mandoline: Add WebGL support

components/html_viewer/blink_platform_impl.cc

Index: components/html_viewer/blink_platform_impl.cc
diff --git a/components/html_viewer/blink_platform_impl.cc b/components/html_viewer/blink_platform_impl.cc
index fbf40d3ab3ac60db81b7da6b4490111de0f11e08..560a4f51427b4070b6a716a82ad7a832dca11c9e 100644
--- a/components/html_viewer/blink_platform_impl.cc
+++ b/components/html_viewer/blink_platform_impl.cc
@@ -17,6 +17,7 @@
 #include "components/html_viewer/blink_resource_constants.h"
 #include "components/html_viewer/web_clipboard_impl.h"
 #include "components/html_viewer/web_cookie_jar_impl.h"
+#include "components/html_viewer/web_graphics_context_3d_command_buffer_impl.h"
 #include "components/html_viewer/web_socket_handle_impl.h"
 #include "components/html_viewer/web_url_loader_impl.h"
 #include "components/message_port/web_message_port_channel_impl.h"
@@ -34,6 +35,7 @@
 #include "third_party/WebKit/public/platform/WebWaitableEvent.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/events/gestures/blink/web_gesture_curve_impl.h"
+#include "url/gurl.h"
 
 namespace html_viewer {
 namespace {
@@ -68,7 +70,8 @@ class WebWaitableEventImpl : public blink::WebWaitableEvent {
 BlinkPlatformImpl::BlinkPlatformImpl(
     mojo::ApplicationImpl* app,
     scheduler::RendererScheduler* renderer_scheduler)
-    : main_thread_task_runner_(renderer_scheduler->DefaultTaskRunner()),
+    : app_(app),
+      main_thread_task_runner_(renderer_scheduler->DefaultTaskRunner()),
       main_thread_(new scheduler::WebThreadImplForRendererScheduler(
           renderer_scheduler)) {
   if (app) {
@@ -162,6 +165,34 @@ const unsigned char* BlinkPlatformImpl::getTraceCategoryEnabledFlag(
   return buf;
 }
 
+blink::WebGraphicsContext3D*
+BlinkPlatformImpl::createOffscreenGraphicsContext3D(
+    const blink::WebGraphicsContext3D::Attributes& attributes,
+    blink::WebGraphicsContext3D* share_context) {
+  return createOffscreenGraphicsContext3D(attributes, share_context, nullptr);
+}
+
+blink::WebGraphicsContext3D*
+BlinkPlatformImpl::createOffscreenGraphicsContext3D(
+    const blink::WebGraphicsContext3D::Attributes& attributes,
+    blink::WebGraphicsContext3D* share_context,
+    blink::WebGLInfo* gl_info) {
+  return WebGraphicsContext3DCommandBufferImpl::CreateOffscreenContext(
+      app_, GURL(attributes.topDocumentURL), attributes, share_context,
+      gl_info);
+}
+
+blink::WebGraphicsContext3D*
+BlinkPlatformImpl::createOffscreenGraphicsContext3D(
+    const blink::WebGraphicsContext3D::Attributes& attributes) {
+  return createOffscreenGraphicsContext3D(attributes, nullptr, nullptr);
+}
+
+blink::WebGraphicsContext3DProvider*
+BlinkPlatformImpl::createSharedOffscreenGraphicsContext3DProvider() {
+  return nullptr;
+}
+
 blink::WebData BlinkPlatformImpl::loadResource(const char* resource) {
   for (size_t i = 0; i < arraysize(kDataResources); ++i) {
     if (!strcmp(resource, kDataResources[i].name)) {