VR: Enable browsing for CCT and make ui_scene_manager aware of whether we're in CCT.

chrome/browser/android/vr_shell/vr_shell.cc

Index: chrome/browser/android/vr_shell/vr_shell.cc
diff --git a/chrome/browser/android/vr_shell/vr_shell.cc b/chrome/browser/android/vr_shell/vr_shell.cc
index 1917ddbef19bccb8195c63e9dc0a1d1bd400e840..fde562662a6b4c3c3ed79526f870050f6619c9ea 100644
--- a/chrome/browser/android/vr_shell/vr_shell.cc
+++ b/chrome/browser/android/vr_shell/vr_shell.cc
@@ -83,6 +83,7 @@ VrShell::VrShell(JNIEnv* env,
                  jobject obj,
                  ui::WindowAndroid* window,
                  bool for_web_vr,
+                 bool in_cct,

[cjgrant, 2017/05/05 14:21:56]

General observation (discussed offline).  We have a few bits of info, 'for
webvr' and 'in cct' coming via constructor, and other information coming via
calls posted after the fact.  Maybe in the future we should send all such
information after the fact, but have scene manager be smart enough to know it
needs to wait for certain pieces of information before building the scene.  As
the "manager", the brains of sorting out when to draw is supposed to belong
there...  food for thought.

[mthiesse, 2017/05/05 14:25:57]

Agreed in general, but for cct state in particular I think it makes sense to
keep it a constructor parameter as it'll never change.

                  VrShellDelegate* delegate,
                  gvr_context* gvr_api,
                  bool reprojected_rendering)
@@ -99,9 +100,9 @@ VrShell::VrShell(JNIEnv* env,
   g_instance = this;
   j_vr_shell_.Reset(env, obj);
 
-  gl_thread_ = base::MakeUnique<VrGLThread>(weak_ptr_factory_.GetWeakPtr(),
-                                            main_thread_task_runner_, gvr_api,
-                                            for_web_vr, reprojected_rendering_);
+  gl_thread_ = base::MakeUnique<VrGLThread>(
+      weak_ptr_factory_.GetWeakPtr(), main_thread_task_runner_, gvr_api,
+      for_web_vr, in_cct, reprojected_rendering_);
 
   base::Thread::Options options(base::MessageLoop::TYPE_DEFAULT, 0);
   options.priority = base::ThreadPriority::DISPLAY;
@@ -563,11 +564,13 @@ jlong Init(JNIEnv* env,
            const base::android::JavaParamRef<jobject>& delegate,
            jlong window_android,
            jboolean for_web_vr,
+           jboolean in_cct,
            jlong gvr_api,
            jboolean reprojected_rendering) {
   return reinterpret_cast<intptr_t>(new VrShell(
       env, obj, reinterpret_cast<ui::WindowAndroid*>(window_android),
-      for_web_vr, VrShellDelegate::GetNativeVrShellDelegate(env, delegate),
+      for_web_vr, in_cct,
+      VrShellDelegate::GetNativeVrShellDelegate(env, delegate),
       reinterpret_cast<gvr_context*>(gvr_api), reprojected_rendering));
 }