Implement WebPermissionClient for Document and Worker contexts

content/child/blink_platform_impl.cc

Index: content/child/blink_platform_impl.cc
diff --git a/content/child/blink_platform_impl.cc b/content/child/blink_platform_impl.cc
index 672e7cdc5632109a575d270e705ea67ee0a9b2a9..253c7adcced026ab7e3c9a6fbdd4cc1b31787440 100644
--- a/content/child/blink_platform_impl.cc
+++ b/content/child/blink_platform_impl.cc
@@ -35,6 +35,8 @@
 #include "content/child/navigator_connect/navigator_connect_provider.h"
 #include "content/child/notifications/notification_dispatcher.h"
 #include "content/child/notifications/notification_manager.h"
+#include "content/child/permissions/permissions_manager.h"
+#include "content/child/permissions/permissions_manager_thread_proxy.h"
 #include "content/child/push_messaging/push_dispatcher.h"
 #include "content/child/push_messaging/push_provider.h"
 #include "content/child/thread_safe_sender.h"
@@ -442,6 +444,8 @@ void BlinkPlatformImpl::InternalInit() {
     notification_dispatcher_ =
         ChildThreadImpl::current()->notification_dispatcher();
     push_dispatcher_ = ChildThreadImpl::current()->push_dispatcher();
+    permission_client_.reset(new PermissionsManager(
+        *ChildThreadImpl::current()->service_registry()));
   }
 
   if (main_thread_task_runner_.get()) {
@@ -1023,13 +1027,10 @@ blink::WebGestureCurve* BlinkPlatformImpl::createFlingAnimationCurve(
     blink::WebGestureDevice device_source,
     const blink::WebFloatPoint& velocity,
     const blink::WebSize& cumulative_scroll) {
-  bool is_main_thread =
-      main_thread_task_runner_.get() &&
-      main_thread_task_runner_->BelongsToCurrentThread();
   return WebGestureCurveImpl::CreateFromDefaultPlatformCurve(
              gfx::Vector2dF(velocity.x, velocity.y),
              gfx::Vector2dF(cumulative_scroll.width, cumulative_scroll.height),
-             is_main_thread).release();
+             IsMainThread()).release();
 }
 
 void BlinkPlatformImpl::didStartWorkerRunLoop() {
@@ -1082,6 +1083,17 @@ BlinkPlatformImpl::navigatorConnectProvider() {
       thread_safe_sender_.get(), main_thread_task_runner_);
 }
 
+blink::WebPermissionClient* BlinkPlatformImpl::permissionClient() {
+  if (!permission_client_.get())
+    return nullptr;
+
+  if (IsMainThread())
+    return permission_client_.get();
+
+  return PermissionsManagerThreadProxy::GetThreadInstance(
+      main_thread_task_runner_.get(), permission_client_.get());
+}
+
 WebThemeEngine* BlinkPlatformImpl::themeEngine() {
   return &native_theme_engine_;
 }
@@ -1238,6 +1250,11 @@ BlinkPlatformImpl::MainTaskRunnerForCurrentThread() {
   }
 }
 
+bool BlinkPlatformImpl::IsMainThread() const {
+  return main_thread_task_runner_.get() &&
+         main_thread_task_runner_->BelongsToCurrentThread();
+}
+
 WebString BlinkPlatformImpl::domCodeStringFromEnum(int dom_code) {
   return WebString::fromUTF8(ui::KeycodeConverter::DomCodeToCodeString(
       static_cast<ui::DomCode>(dom_code)));