Expose GLES2Interface to blink, and delete isContextLost() from WGC3D.

third_party/WebKit/Source/platform/graphics/gpu/Extensions3DUtil.h

Index: third_party/WebKit/Source/platform/graphics/gpu/Extensions3DUtil.h
diff --git a/third_party/WebKit/Source/platform/graphics/gpu/Extensions3DUtil.h b/third_party/WebKit/Source/platform/graphics/gpu/Extensions3DUtil.h
index ee6298c9a7ab8bf16be11aa618fb59eb2f0519b0..0e36c32492a13f12074a38b10adf6fedccceb5f9 100644
--- a/third_party/WebKit/Source/platform/graphics/gpu/Extensions3DUtil.h
+++ b/third_party/WebKit/Source/platform/graphics/gpu/Extensions3DUtil.h
@@ -15,6 +15,12 @@
 #include "wtf/text/StringHash.h"
 #include "wtf/text/WTFString.h"
 
+namespace gpu {
+namespace gles2 {
+class GLES2Interface;
+}
+}
+
 namespace blink {
 
 class WebGraphicsContext3D;
@@ -23,8 +29,8 @@ class PLATFORM_EXPORT Extensions3DUtil final {
     USING_FAST_MALLOC(Extensions3DUtil);
     WTF_MAKE_NONCOPYABLE(Extensions3DUtil);
 public:
-    // Creates a new Extensions3DUtil. If the passed WebGraphicsContext3D has been spontaneously lost, returns null.
-    static PassOwnPtr<Extensions3DUtil> create(WebGraphicsContext3D*);
+    // Creates a new Extensions3DUtil. If the passed GLES2Interface has been spontaneously lost, returns null.
+    static PassOwnPtr<Extensions3DUtil> create(WebGraphicsContext3D*, gpu::gles2::GLES2Interface*);
     ~Extensions3DUtil();
 
     bool isValid() { return m_isValid; }
@@ -36,10 +42,11 @@ public:
     static bool canUseCopyTextureCHROMIUM(GLenum destTarget, GLenum destFormat, GLenum destType, GLint level);
 
 private:
-    Extensions3DUtil(WebGraphicsContext3D*);
+    Extensions3DUtil(WebGraphicsContext3D*, gpu::gles2::GLES2Interface*);
     void initializeExtensions();
 
     WebGraphicsContext3D* m_context;
+    gpu::gles2::GLES2Interface* m_gl;
     HashSet<String> m_enabledExtensions;
     HashSet<String> m_requestableExtensions;
     bool m_isValid;