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

content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.cc

Index: content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.cc
diff --git a/content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.cc b/content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.cc
index e4ab31ad97bf9cb696d577d6fbfac62d56ccdde1..773dc61d293b593a068730f2d415669804fbbf4d 100644
--- a/content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.cc
+++ b/content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.cc
@@ -258,7 +258,7 @@ bool WebGraphicsContext3DCommandBufferImpl::CreateContext() {
       gles2_helper_.get(), gles2_share_group.get(), transfer_buffer_.get(),
       bind_generates_resources, lose_context_when_out_of_memory_,
       support_client_side_arrays, command_buffer_.get()));
-  setGLInterface(real_gl_.get());
+  SetGLInterface(real_gl_.get());
 
   if (!real_gl_->Initialize(
       mem_limits_.start_transfer_buffer_size,
@@ -275,7 +275,7 @@ bool WebGraphicsContext3DCommandBufferImpl::CreateContext() {
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableGpuClientTracing)) {
     trace_gl_.reset(new gpu::gles2::GLES2TraceImplementation(GetGLInterface()));
-    setGLInterface(trace_gl_.get());
+    SetGLInterface(trace_gl_.get());
   }
   return true;
 }
@@ -305,7 +305,7 @@ void WebGraphicsContext3DCommandBufferImpl::Destroy() {
     // issued on this context might not be visible to other contexts in the
     // share group.
     gl->Flush();
-    setGLInterface(NULL);
+    SetGLInterface(nullptr);
   }
 
   trace_gl_.reset();
@@ -315,7 +315,7 @@ void WebGraphicsContext3DCommandBufferImpl::Destroy() {
   real_gl_.reset();
   command_buffer_.reset();
 
-  host_ = NULL;
+  host_ = nullptr;
 }
 
 gpu::ContextSupport*