WIP - Control the lifetime of RenderThreadManager from Java.

android_webview/browser/shared_renderer_state.h

Index: android_webview/browser/shared_renderer_state.h
diff --git a/android_webview/browser/shared_renderer_state.h b/android_webview/browser/shared_renderer_state.h
index 8dd938cede38d2d7e461c2fb399c03d1a8df5a1d..25fef299d631c88abef576c5cdf9a28d12628872 100644
--- a/android_webview/browser/shared_renderer_state.h
+++ b/android_webview/browser/shared_renderer_state.h
@@ -9,6 +9,8 @@
 
 #include "android_webview/browser/gl_view_renderer_manager.h"
 #include "android_webview/browser/parent_compositor_draw_constraints.h"
+#include "base/android/jni_weak_ref.h"
+#include "base/android/scoped_java_ref.h"
 #include "base/cancelable_callback.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
@@ -43,10 +45,11 @@ class SharedRendererState {
   using ReturnedResourcesMap = std::map<uint32_t, ReturnedResources>;
 
   SharedRendererState(
-      SharedRendererStateClient* client,
       const scoped_refptr<base::SingleThreadTaskRunner>& ui_loop);
   ~SharedRendererState();
 
+  void SetClient(SharedRendererStateClient* client);
+
   // This function can be called from any thread.
   void ClientRequestDrawGL(bool for_idle);
 
@@ -95,7 +98,7 @@ class SharedRendererState {
 
   // Accessed by UI thread.
   scoped_refptr<base::SingleThreadTaskRunner> ui_loop_;
-  SharedRendererStateClient* const client_;
+  SharedRendererStateClient* client_;
   base::WeakPtr<SharedRendererState> ui_thread_weak_ptr_;
   base::CancelableClosure request_draw_gl_cancelable_closure_;
 
@@ -120,6 +123,8 @@ class SharedRendererState {
   DISALLOW_COPY_AND_ASSIGN(SharedRendererState);
 };
 
+bool RegisterSharedRendererState(JNIEnv* env);
+
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_SHARED_RENDERER_STATE_H_